2-Aminomethyl phenol derivative and process for preparing thereof

A 2-aminomethyl phenol derivative of the formula (I): ##STR1## wherein X is a halogen atom; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 which may be the same or different are each a hydrogen atom or a straight or branched chain alkyl group having 1 to 4 carbon atoms; n is 2, 3, 4 or 5 and a pharmaceutically acceptable acid addition salt thereof are disclosed. Also disclosed is a process for preparing such derivative or a pharmaceutically acceptable acid addition salt thereof.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
This invention relates to a novel 2-aminomethyl phenol derivative and a 
process for preparing the same. More particularly, this invention relates 
to a 2-aminomethyl phenol derivative useful as a medicine, especially as 
an anti-inflammatory agent, of the formula (I): 
##STR2## 
wherein X is a halogen atom; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 which 
may be the same or different are each a hydrogen atom or a straight or 
branched chain alkyl group having 1 to 4 carbon atoms; n is 2,3,4 or 5 and 
pharmaceutically acceptable acid addition salts thereof. 
It will be understood that the compound of this invention of the formula 
(I) can be more simply represented by the following two formulae: 
##STR3## 
(wherein all symbols have the same meaning as defined above). 
2. Description of the Prior Art 
Conventional non-steroid acidic anti-inflammatory agents have been 
considered disadvantageous in that they have a side effect of developing a 
complication of gastric ulcer. As a result of studies on a novel 
anti-inflammatory agent free from the defect of the conventional 
anti-inflammatory agents, the compound of this invention which will be 
described in more detail hereinafter has been found. The compound of this 
invention has anti-inflammatory, analgesic, antipyretic, diuretic and 
hypotensive effects, and can be used for preventing and curing diseases 
caused by inflammation, edema, hypertension, etc. 
SUMMARY OF THE INVENTION 
Accordingly, a principal object of the present invention is to provide a 
non-steroid anti-inflammatory agent which is substantially free from the 
side effects which accompany conventional anti-inflammatory agents. 
Another object of the present invention is to provide a compound having 
anti-inflammatory, analgesic, antipyretic, diuretic and hypotensive 
effects that can be used for preventing and curing deceases caused by 
inflammation, edema, hypertension, etc. 
Still a further object of the present invention is to provide a compound 
having the above effects but free from the side effect of gastric ulcers. 
Another object of the present invention is to provide a method for 
synthesizing such a compound. 
These and other objects of the present invention are accomplished by the 
2-aminomethylphenol compound of the present invention. 
DETAILED DESCRIPTION OF THE INVENTION 
The halogen atoms represented by X of the formula (I) are chlorine, 
bromine, fluorine and iodine atoms, and the iodine atom is preferred. 
Examples of the C.sub.1 -C.sub.4 alkyl groups represented by R.sup.1, 
R.sup.2, R.sup.3 and R.sup.4 of the formula (I) include a methyl group, an 
ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an 
isobutyl group, a sec-butyl group and a tert-butyl group. Preferrably 
R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each a hydrogen atom or a methyl 
group. 
Examples of preferred pharmaceutically acceptable acid addition salts of 
the compound of the formula (I) are inorganic acid salts such as 
hydrochloride, hydrobromide, hydroiodide, sulfate, phosphate, nitrate, 
etc., and organic acid salts such as acetate, lactate, tartrate, citrate, 
methanesulfonate, ethanesulfonate, benzenesulfonate, toluenesulfonate, 
isethionate, etc. 
According to this invention, a 2-aminomethyl phenol derivative of the 
formula (I) wherein R.sup.2 is a hydrogen atom and the other symbols are 
the same as defined above, or a compound of the formula (IV): 
##STR4## 
wherein the balance of the compound is as defined above is prepared by 
eliminating group R.sup.5 of a compound of the formula (V): 
##STR5## 
wherein R.sup.5 is a formyl group, an alkylcarbonyl group having 2 to 5 
carbon atoms or a haloalkylcarbonyl group having 2 to 5 carbon atoms or 
benzoyl group unsubstituted or substituted with at least one lower alkyl 
group having 1 to 3 carbon atoms, a hydroxyl group or halogen atom; and 
the other symbols are the same as defined above. Examples of such group 
R.sup.5 are a formyl group, an acetyl group, a monochloroacetyl group, a 
propionyl group, a trichloroacetyl group, a benzoyl group, etc. 
Elimination of group R.sup.5 can be effected using an aqueous solution of 
an inorganic acid (1 to 10 equivalents) such as hydrochloric acid, 
hydrobromic acid, hydriodic acid, sulfuric acid, phosphoric acid and 
nitric acid in the presence of an inert organic solvent such as a lower 
alkanol such as methanol or ethanol or acetic acid, preferably in the 
presence of ethanol at a concentration of 5 to 20% (wt./vol) of the 
compound, at a temperature in the range from room temperature to the 
reflux temperature of the solvent used, preferably at the reflux 
temperature of the solvent used. 
The product obtained may be purified either by recrystallization or by 
carbobenzoxydation which is followed by purification through 
recrystallization or chromatography which is then followed by elimination 
of the carbobenzoxy group. The product is obtained in the form of an acid 
addition salt of an inorganic acid. Free amine is obtained by neutralizing 
the acid addition salt in a conventional manner. An acid addition salt of 
inorganic acids other than the inorganic acid obtained or organic acids is 
obtained by adding an inorganic acid or organic acid to the free amine. 
A compound of the formula (V) is obtained by reacting a compound of the 
formula (VI): 
##STR6## 
wherein all symbols have the meaning defined above with 1 to 3 equivalents 
of a compound of the formula (VII): 
##STR7## 
wherein R.sup.1 and R.sup.5 are as defined above using a strong inorganic 
acid such as hydrochloric acid or sulfuric acid in the presence of a lower 
alkanol such as ethanol or an aliphatic acid such as acetic acid at a 
concentration of 5 to 20% (wt./vol) of compound (VI), normally at room 
temperature. 
A compound of the formula (VI) is obtained by halogenating a compound of 
the formula (VIII): 
##STR8## 
wherein all symbols mean the same as defined above. Halogenation is 
carried out either in the presence of an inert organic solvent such as 
chloroform, methylene chloride or benzene or acetic acid using a 
halogenating agent such as iodine monochloride, bromine, chlorine or 
sulfuryl chloride at a temperature in the range from room temperature to 
100.degree. C. or by reacting the compound of the formula (VIII) with an 
aqueous solution of iodine or a mixture of potassium iodide and iodine in 
the presence of an aliphatic amine such as primary or secondary amine, for 
example, ethylene diamine, morpholine, etc., using water, alcohol such as 
methanol or ethanol or water containing alcohol at a temperature ranging 
from room temperature to the reflux temperature of the solvent used. 
A compound of the formula (V) may also be obtained from a compound of the 
formula (IX): 
##STR9## 
wherein all symbols are as defined above under the same conditions for 
converting a compound of the formula (VIII) to a compound of the formula 
(VI). 
A compound of the formula (IX) is obtained from a compound of the formula 
(VIII) using the conditions for converting a compound of the formula (VI) 
to a compound of the formula (V). 
Further according to this invention, a compound of the formula (I) wherein 
R.sup.2 is a straight or branched chain alkyl group having 1 to 4 carbon 
atoms and the other symbols are as defined above, or a compound of the 
formula (X): 
##STR10## 
wherein R.sup.6 is a straight or branched chain alkyl group having 1 to 4 
carbon atoms, and the other symbols are the same as defined above is 
obtained by reacting a compound of the formula (VI) with 1 to 5 
equivalents of a primary or secondary amine of the formula (XI): 
##STR11## 
wherein R.sup.1 and R.sup.6 are each the same as defined above and 1 to 5 
equivalents of formalin, or an aqueous solution of formaldehyde, in the 
presence or absence of a lower alkanol such as methanol or ethanol at a 
temperature ranging from 0.degree. to 50.degree. C., preferably at room 
temperature. Examples of suitable primary or secondary amines are 
methylamine, ethylamine, n-propylamine, isopropylamine, n-butylamine, 
sec-butylamine, dimethylamine, diethylamine, di-n-propylamine, 
di-n-butylamine, N-ethyl-n-butylamine, etc. Examples of preferred amines 
are dimethylamine and diethylamine. The product obtained can optionally be 
made into the form of an acid addition salt by a known method. 
A compound of the formula (X) is also obtained from a compound of the 
formula (XII): 
##STR12## 
wherein all symbols are as defined above under the conditions for 
converting a compound of the formula (VIII) to a compound of the formula 
(VI). 
A compound of the formula (XII) is obtained from a compound of the formula 
(VIII) under the conditions for converting a compound of the formula (VI) 
to a compound of the formula (X). 
For conversion from a compound of the formula (VI) to a compound of the 
formula (V), from a compound of the formula (VIII) to a compound of the 
formula (IX), from a compound of the formula (VI) to a compound of the 
formula (X) or from a compound of the formula (VIII) to a compound of the 
formula (XII), or for a compound of the formula (VII), see Organic 
Reactions, 14, pp. 52-269, John Wiley & Sons, Inc., U.S.A. 
The starting material of the formula (VIII) is either known or can be 
prepared by any of the methods described in the following publications: 
(1) Chemistry Letters, No. 1, 59-62, 1974 
(2) Chemische Berichte, 93, 1774-1781, 1960 
(3) Travaux de la Societe de Pharmacie de Montpellier, 24, No. 1, 89-94, 
1964. 
Also, according to this invention, a compound of the formula (I) can be 
prepared from a compound of the formula (XIII) through the reaction taking 
the following course: 
##STR13## 
wherein R.sup.7 is a lower alkyl group, and R.sup.1, R.sup.2, R.sup.3, 
R.sup.4 and n are each as defined above. 
To be more specific, a compound of the formula (XIII) is esterified under 
ordinary esterification conditions which comprise, for example, 
maintaining a solution of the compound in an alkanol such as methanol, 
ethanol or n-propanol, preferably methanol or ethanol, for 1 to 10 hours 
at a temperature in the range from room temperature to the reflux 
temperature of the solvent in the presence of an acid such as hydrogen 
chloride gas, sulfuric acid or toluenesulfonic acid, or, alternatively, 
heating under reflux the compound as dissolved in benzene in the presence 
of the above alkanol and acid, while eliminating the resulting water. A 
compound of the formula (XIV) obtained is converted to a compound of the 
formula (XVI) by either reacting it with an amine of the formula (XV) in 
the presence of an inert organic solvent such as methanol, ethanol, 
benzene, toluene, tetrahydrofuran, dioxane, diethyl ether or under heat 
conditions at a temperature in the range from room temperature to the 
reflux temperature of the solvent or by maintaining the same reaction 
system in an autoclave at a temperature ranging from room temperature to 
150.degree. C. Examples of amines of the formula (XV) include ammonia and 
primary or secondary amines such as methylamine, ethylamine, 
n-propylamine, isopropylamine, n-butylamine, dimethylamine, diethylamine, 
di-n-propylamine, di-n-butylamine and N-methyl ethylamine. The compound of 
the formula (XVI) obtained is converted to a compound of the formula 
(XVII) by maintaining it in a solvent such as tetrahydrofuran, dioxane or 
1,2-dimethoxyethane in the presence of 2 to 10 moles of a reducing agent 
such as lithium aluminum hydride, sodium borohydride, diborane, sodium 
aluminum dimethoxyethoxy hydride for 1 to 20 hours at a temperature in the 
range from room temperature to the reflux temperature of the solvent. A 
compound of the formula (I) is then obtained by halogenating the compound 
of the formula (XVII) under the conditions for converting a compound of 
the formula (IX) to a compound of the formula (V). 
If a compound of the formula (XVII) is such that both R.sup.1 and R.sup.2 
are a hydrogen atom or R.sup.1 is a straight or branched chain alkyl group 
having 1 to 4 carbon atoms and R.sup.2 is a hydrogen atom, the amino group 
may be protected before halogenation, followed by elimination of the 
protecting group, as illustrated by the following scheme: 
##STR14## 
wherein P is an amino protecting group, and R.sup.1, R.sup.3, R.sup.4 and 
n are each the same as defined above. 
The amino group of the compound of the formula (XVIII) may be protected by 
ordinary amino protecting groups, such as a carbobenzyloxy group, a 
tert-butoxycarbonyl group, an o-nitrophenylsulfenyl group, a formyl group, 
an acetyl group, a monochloroacetyl group or a trifluoroacetyl group. A 
preferred amino protecting group is a carbobenzyloxy group. These amino 
protecting groups can be introduced into the compound of the formula 
(XVIII) by a conventional method. A compound of the formula (XIX) obtained 
is converted to a compound of the formula (XX) under the same halogenation 
conditions described above, and then the latter compound has the amino 
protecting group eliminated to produce a compound of the formula (IV). The 
amino protecting group may be suitably eliminated by an ordinary method: 
the carbobenzyloxy group may be treated with a 30% solution of hydrobromic 
acid in acetic acid at 0.degree. C. to room temperature whereas the 
tert-butoxycarbonyl group with a solution of trifluoroacetic acid or 
hydrochloric acid in acetic acid at room temperature. 
The starting compound of the formula (XIII) is described in J. Org. Chem., 
14, 366-374 (1949). 
2-Aminomethyl phenol derivatives and pharmaceutically acceptable non-toxic 
salts thereof have anti-inflammatory, analgesic, antipyretic, diuretic and 
hypotensive effects, and so they can be advantageously used as an 
anti-inflammatory agent, analgesic, antipyretic, diuretic or urinating 
agent, and hypotensive agent. The following laboratory experiments 
demonstrate the effects of this compound. 
(1) Wister male rats were orally administered with 
1-iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol hydrobromide, 
1-aminomethyl-3-iodo-5,6,7,8-tetrahydro-2-naphthol hydrobromide, 
4-iodo-6-aminomethyl-5-indanol hydrochloride and 
1-iodo-3-aminomethyl-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol 
hydrochloride, respectively, and the rats had carrageenan-induced edema in 
their paws inhibited. 
One hour after oral administration with these compounds, the rats were 
subcutaneously injected with 0.1 m of 1% carrageenan suspension on the 
plantar surface of the right hind foot. The swelling was measured at the 
third hour of carrageenan injection. Anti-inflammatory effect of the 
compounds was determined as percentage inhibition of the swelling, taking 
the swelling in the control groups as 100%. The results of the test are 
shown in Table 1. 
TABLE 1 
______________________________________ 
Anti-Inflammatory Effect of the Compounds of this 
Invention on Carrageenan-Induced Edema in Rat Paws 
% Inhibition of 
Foot Edema 
10 mg/kg 30 mg/kg 
Compound (%) (%) 
______________________________________ 
1-Iodo-3-aminomethyl-5,6,7,8- 
68.8 69.6 
tetrahydro-2-naphthol Hydrobromide 
1-Aminomethyl-3-iodo-5,6,7,8- 
55.6 68.8 
tetrahydro-2-naphthol Hydrobromide 
4-Iodo-6-aminomethyl-5-indanol 
41.1 55.8 
Hydrochloride 
1-Iodo-3-aminomethyl-5,5-dimethyl- 
44.1 66.3 
5,6,7,8-tetrahydro-2-naphthol 
Hydrochloride 
______________________________________ 
As will be clear from the results shown in Table 2, the compound of this 
invention inhibits carageenan-induced edema well at low dosage levels. 
(2) Upon oral administration with a dose of 3 mg/kg (body weight) of 
1-iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol hydrobromide, 
1-aminomethyl-3-iodo-5,6,7,8-tetrahydro-2-naphthol hydrobromide, 
4-iodo-6-aminomethyl-5-indanol hydrochloride, 
1-iodo-3-(N,N-dimethylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol 
hydrochloride and 1-methyl-4-iodo-6-aminomethyl-5-indanol hydrochloride, 
respectively, Wister male rats discharged increased amounts of urine. 
About 16 hours before oral administration with 3 mg/kg of the compounds, 
the rats were starved, with only water available. The urinary volume 
during a 5 hour period after administration was compared with that of the 
control groups, taking the urinary volume of the latter as 100%. The 
results are shown in Table 2. 
TABLE 2 
______________________________________ 
Diuretic Effect of the Compounds of this Invention on Rats 
% Increase 
in Uri- 
Compound nary Volume 
______________________________________ 
1-Iodo-3-aminomethyl-5,6,7,8-tetrahydro-2- 
naphthol Hydrobromide 226 
1-Aminomethyl-3-iodo-5,6,7,8-tetrahydro-2- 
naphthol Hydrobromide 142 
4-Iodo-6-aminomethyl-5-indanol Hydrochloride 
138 
1-Iodo-3-(N,N-dimethylaminomethyl)-5,6,7,8- 
tetrahydro-2-naphthol Hydrochloride 
232 
1-Methyl-4-iodo-6-aminomethyl-5-indanol 
Hydrochloride 208 
______________________________________ 
The following are examples of the 2-aminomethyl phenol derivative of the 
formula (I) according to this invention, however, the present invention 
should not be construed as being limited to these compounds. 
3-iodo-5-aminomethyl-benzocyclobutene-4-ol; 
3-aminomethyl-5-iodo-benzocyclobutene-4-ol; 
3-iodo-5-(N-methylaminomethyl)benzocyclobutene-4-ol; 
3-iodo-5-(N,N-dimethylaminomethyl)benzocyclobutene-4-ol; 
3-(N-methylaminomethyl)-5-iodo-benzocyclobutene-4-ol; 
3-(N,N-dimethylaminomethyl)-5-iodo-benzocyclobutene-4-ol; 
4-iodo-6-aminomethyl-5-indanol; 4-aminomethyl-6-iodo-5-indanol; 
4-iodo-6-(N-methylaminomethyl)-5-indanol; 
4-iodo-6-(N,N-dimethylaminomethyl)-5-indanol; 
4-(N-methylaminomethyl)-6-iodo-indanol; 
4-(N,N-dimethylaminomethyl)-6-iodo-5-indanol; 
1-methyl-4-iodo-6-aminomethyl-5-indanol; 
1-methyl-4-aminomethyl-6-iodo-5-indanol; 
1-methyl-4-iodo-6-(N-methylaminomethyl)-5-indanol; 
1-methyl-4-iodo-6-(N,N-dimethylaminomethyl)-5-indanol; 
1-methyl-4-(N-methylaminomethyl)-6-iodo-5-indanol; 
1-methyl-4-(N,N-dimethylaminomethyl)-6-iodo-5-indanol; 
1-iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol; 
1-aminomethyl-3-iodo-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N-methylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N,N-dimethylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol; 
1-(N-methylaminomethyl)-3-iodo-5,6,7,8-tetrahydro-2-naphthol, 
1-(N,N-dimethylaminomethyl)-3-iodo-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-aminomethyl-5-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-aminomethyl-3-iodo-5-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N-methylaminomethyl)-5-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N,N-dimethylaminomethyl)5-methyl-5,6,7,8-tetrahydro-2-naphthol 
1-(N-methylaminomethyl)-3-iodo-5-methyl-5,6,7,8-tetrahydro-2-naphthol 
1-(N,N-dimethylaminomethyl)-3-iodo-5-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-aminomethyl-8-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-aminomethyl-3-iodo-8-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N-methylaminomethyl)-8-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N,N-dimethylaminomethyl)-8-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-(N-methylaminomethyl)-3-iodo-8-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-(N,N-dimethylaminomethyl)-3-iodo-8-methyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-aminomethyl-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol; 
1-aminomethyl-3-iodo-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-3-(N-methylaminomethyl)-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol; 
1-iodo-(N,N-dimethylaminomethyl)-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphtho 
l, 
1-(N-methylaminomethyl)-3-iodo-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol; 
1-(N,N-dimethylaminomethyl)-3-iodo-5,5-dimethyl-5,6,7,8-tetrahydro-2-napht 
hol; 1-iodo-3-aminomethyl-6,7,8,9-tetrahydro-5H-benzocycloheptene-2-ol; 
1-aminomethyl-3-iodo-6,7,8,9-tetrahydro-5H-benzocycloheptene-2-ol; 
1-iodo-3-(N-methylaminomethyl)-6,7,8,9-tetrahydro-5H-benzocycloheptene-2-o 
l; 
1-iodo-3-(N,N-dimethylaminomethyl)-6,7,8,9-tetrahydro-5H-benzocycloheptene 
-2-ol; 
1-(N-methylaminomethyl)-3-iodo-6,7,8,9-tetrahydro-5H-benzocycloheptene-2-o 
l; 
1-(N,N-dimethylaminomethyl)-3-iodo-6,7,8,9-tetrahydro-5H-benzocycloheptene 
-2-ol; 
1-iodo-3-aminomethyl-5,5-dimethyl-6,7,8,9-tetrahydro-5H-benzocycloheptene- 
2-ol; 
1-aminomethyl-3-iodo-5,5-dimethyl-6,7,8,9-tetrahydro-5H-benzocycloheptene- 
2-ol; 1-iodo-3-(N-methylaminomethyl)-5,5-dimethyl-6,7,8,9-tetrahydro-5 
H-benzocycloheptene-2-ol; 
1-iodo-3-(N,N-dimethylaminomethyl)-5,5-dimethyl-6,7,8,9-tetrahydro-5H-benz 
ocycloheptene-2-ol; 
1-(N-methylaminomethyl)-3-iodo-5,5-dimethyl-6,7,8,9-tetrahydro-5H-benzocyc 
loheptene-2-ol; and 
1-(N,N-dimethylaminomethyl)-3-iodo-5,5-dimethyl-6,7,8,9-tetrahydro-5H-benz 
ocycloheptene-2-ol. 
Both oral and parenteral administrations are effective for curing and 
preventing diseases due to inflammation, edema and hypertension. A dose of 
5 to 200 mg may desirably be administered once a day or more frequently. 
But exact dosages should be determined by the age, weight and condition of 
a patient as well as by the route and frequency of administration. 
Solid preparations for oral administration include a tablet, pill, powder 
and granule, which has one or more active ingredients mixed with at least 
one inert diluent, such as half-digested starch, potato starch, alginic 
acid, mannite or lactose. The preparation may contain an additive other 
than the diluent, for example, a lubricant such as magnesium stearate, 
according to the conventional manner. Liquid preparations for oral 
administration include a pharmaceutically acceptable emulsion, solution, 
suspension, syrup or elixir containing a commonly employed inert diluent, 
for example, water or liquid paraffin. The preparation contains additives 
other than the inert diluent such as a wettener, suspension aid, 
sweetener, flavoring, aromatizer or antiseptic. Preparations for oral 
administration also include a capsule made of gelatin and other digestable 
substances containing one or more active ingredients and optionally a 
diluent or excipient. 
Preparations for parenteral administration include a sterile aqueous or 
non-aqueous solution, suspension or emulsion. In making non-aqueous 
solutions or suspensions, propylene glycol, polyethylene glycol and 
vegetabl oils such as olive oil, and an injectable organic acid ester such 
as ethyl oleate may be used. Such preparations may contain such additives 
as antiseptic, wettener, emulsifier and dispersant, which can be 
sterilized by, for example, filtration through a bacteria capturing 
filter, compounding of a bactericide or irradiation with ultraviolet 
(radioactive) rays. Alternatively, a sterile solid preparation is first 
made and then dissolved in a sterile injectable solvent immediately before 
use. 
This invention is now described in greater detail by reference to the 
following examples, which are given for illustrative purpose only and by 
no means limit the scope of this invention. In the examples, "TLC", "IR", 
"NMR" and "MS" mean "thin layer chromatography", "infrared absorption 
spectrum", "nuclear magnetic resonance spectrum" and "mass spectrum", 
respectively. The proportions of solvents of which a developing agent used 
for TLC is made are by volume.

EXAMPLE 1 
1-Iodo-5,6,7,8-tetrahydro-2-naphthol and 
3-Iodo-5,6,7,8-tetrahydro-2-naphthol 
A 4.45 g solution of 5,6,7,8-tetrahydro-2-naphthol was dissolved in 25 ml 
of glacial acetic acid, mixed with 5.85 g of iodine monochloride and 
heated under reflux at 100.degree. C. for 2 hours. After reaction, the 
reaction mixture was poured onto 100 ml of ice water and extracted with 
ethyl acetate. The extract was washed sequentially with an aqueous 
solution of sodium thiosulfate (hypo), water and saturated aqueous NaCl 
solution, dried with anhydrous magnesium sulfate, and concentrated under 
vacuum. The residue was purified by column chromatography on silica gel 
using an eluting agent comprising a mixture (1:2) of methylene chloride 
and cyclohexane to provide white crystals each comprising 2.11 g of 
1-iodo-5,6,7,8-tetrahydro-2-naphthol and 2.84 g of 
3-iodo-5,6,7,8-tetrahydro-2-naphthol having the following physical 
properties. 
1-Iodo-5,6,7,8-tetrahydro-2-naphthol 
Melting Point: 89.degree.-90.degree. C. 
TLC (on a developer of methylene chloride): Rf=0.60. 
IR (KBr tablet method): .nu.=3300, 2920, 2850, 1600, 1565, 1480, 1440, 
1410, 1350, 1280, 1260, 1170, 1120, 1070, 1000, 945, 930, 895, 870, 830, 
800, 770, 730, 580, 540 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=6.90 (1H, d, J=8.0 Hz), 6.70 (1H, d, 
J=8.0 Hz), 5.30 (1H, s), 3.0-2.2 (4H, m), 2.2-1.4 (4H, m). 
3-Iodo-5,6,7,8-tetrahydro-2-naphthol 
Melting Point: 70.degree. C. 
TLC (on a developer of methylene chloride); Rf=0.55. 
IR (KBr tablet method): .nu.=3220, 2920, 2850, 1770, 1740, 1595, 1500, 
1450, 1410, 1370, 1350, 1330, 1310, 1275, 1235, 1185, 1145, 1000, 945, 
935, 910, 850, 815, 745, 730, 630, 605, 550 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.23 (1H, s), 6.60 (1H, s), 5.00 (1H, 
s), 3.0-2.4 (4H, m), 2.0-1.5 (4H, m). 
EXAMPLE 2 
1-Iodo-3-(N-chloroacetylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol 
1.26 g of 1-iodo-5,6,7,8-tetrahydro-2-naphthol as prepared in Example 1 was 
dissolved in 10 ml of a mixture (10:1) of glacial acetic acid and 
concentrated sulfuric acid, and mixed with 0.86 g of 
N-hydroxymethylchloroacetamide at 20.degree. C. with stirring that 
continued for 10 minutes at the same temperature. The reaction mixture was 
then poured onto 50 ml of ice water and extracted with ethyl acetate. The 
extract was sequentially washed with water and saturated aqueous NaCl 
solution, dried with anhydrous magnesium sulfate and concentrated under 
vacuum. The residue was purified by column chromatography on silica gel 
using methylene chloride as an eluting agent, giving 1.12 g of a white 
crystal of the title compound having the following physical properties. 
Melting Point: 133.degree.-143.degree. C. 
TLC (methylene chloride as a developing agent); Rf=0.30. 
IR (KBr tablet method): .nu.=3320, 2920, 2850, 1620, 1550, 1450, 1430, 
1410, 1370, 1340, 1290, 1260, 1240, 1180, 1160, 1100, 1020, 910, 830, 780, 
750, 620, 595 cm.sup.-1. 
NMR (CDCl.sub.3 solution); .delta.=7.53 (1H, s), 7.5-6.9 (1H, m), 6.73 (1H, 
s), 4.37 (2H, d, J=6.0 Hz), 4.00 (2H, s), 3.0-2.4 (4H, m), 2.1-1.4 (4H, 
m). 
EXAMPLE 3 
1-Iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol Hydrochloride 
A solution of 1.08 g of N-chloroacetylamino compound (prepared in Example 
2) in 10 ml of ethanol was mixed with 2 ml of concentrated hydrochloric 
acid and heated under reflux for 5 hours. The reaction mixture was 
concentrated under vacuum, and the residue was recrystallized from a 
solvent comprising a mixture of methanol and diethyl ether, giving 680 mg 
of a white crystal of the title compound having the following physical 
properties. 
Melting Point: decomposed at a temperature higher than 200.degree. C. 
TLC (on a developer consisting of n-butanol/glacial acetic acid/water at 
25:2:3): Rf=0.90. 
IR (KBr table method): .nu.=3000, 2930, 1580, 1460, 1430, 1380, 1320, 1260, 
1230, 1140, 1120, 920, 860, 820, 780, 740 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6 solution): .delta.=9.6 (1H, broad s), 8.15 
(3H, broad s), 7.1-6.4 (1H, m), 4.2-3.6 (2H, m), 2.8-2.3 (4H, m), 2.0-1.4 
(4H, m). 
EXAMPLE 4 
1-Iodo-3-(N-carbobenzoxyaminomethyl)-5,6,7,8-tetrahydro-2-naphthol 
A solution of 610 mg of amine hydrochloride (prepared in Example 3) in 4 ml 
of warm water was mixed with 4.0 ml of 1 N aqueous sodium hydroxide 
solution, further mixed with 400 mg of carbobenzoxychloride under stirring 
at room temperature, and the mixture was left standing for 10 minutes at 
room temperature. The reaction mixture was acidified with 1 N hydrochloric 
acid and extracted with ethyl acetate. The extract was sequentially washed 
with water and saturated aqueous NaCl solution, dried with anhydrous 
magnesium sulfate and concentrated under vacuum. The residue was purified 
by column chromatography on silica gel using methylene chloride as an 
eluting agent, giving 473 mg of a white crystal of the title compound 
having the following physical properties. 
TLC (on a developer of methylene chloride); Rf=0.40. 
IR (KBr tablet method): .nu.=3300, 3050, 2920, 1760, 1670, 1610, 1545, 
1455, 1380, 1360, 1290, 1250, 1180, 1140, 1090, 1030, 990, 920, 880, 825, 
780, 735, 695, 580 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.20 (6H, s), 6.73 (1H, s), 5.40 (1H, 
broad s), 5.00 (2H, s), 4.23 (2H, d, J=6.0 Hz), 2.9-2.4 (4H, m), 2.0-1.4 
(4H, m). 
EXAMPLE 5 
1-Iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol Hydrobromide 
A mixture of 470 mg of the N-carbobenzoxyaminomethyl compound prepared in 
Example 4 and 1.0 g of 30% solution of hydrogen bromide in acetic acid was 
left standing at room temperature under occasional stirring until no more 
gas developed. To the reaction mixture was added 30 ml of diethyl ether, 
the precipitating solid was filtered off and washed with diethyl ether 
followed by drying. The resulting solid was recrystallized from a mixture 
of methanol and diethyl ether, giving 226 mg of a white crystal of the 
title compound having the following physical properties. 
Melting Point: 204.degree.-206.degree. C. 
TLC (on a developer consisting of n-butanol/glacial acetic acid/water at 
5:2:3): Rf=0.70. 
IR (KBr tablet method): .nu.=3400, 3150-3000, 2930, 1600-1560, 1470, 1410, 
1380, 1320, 1240-1210, 1180-1160, 1120, 780 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6 solution): .delta.=10.0-8.5 (1H, broad s), 
8.5-7.5 (1H, broad s), 7.5-6.5 (1H, m), 4.03 (2H, broad s), 2.9-2.3 (4H, 
m), 2.0-1.4 (4H, m). 
MS: m/e=303, 286, 177, 160, 159, 132, 131, 117, 115, 104, 91, 82, 80, 77. 
EXAMPLE 6 
1-(N-Chloroacetylaminomethyl)-3-iodo-5,6,7,8-tetrahydro-2-naphthol 
The 3-iodo-5,6,7,8-tetrahydro-2-naphthol (prepared in Example 1) was 
treated by the procedure of Example 2, giving a white crystal of the title 
compound (yield of 45%) having the following physical properties. 
Melting Point: 119.degree.-125.degree. C. 
TLC (on a developing agent of methylene chloride): Rf=0.30. 
IR (KBr tablet method): .nu.=3370, 2930, 2860, 1630, 1550, 1455, 1415, 
1340, 1260, 1235, 1190, 1160, 780, 760 and 590 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.93 (1H, s), 7.5-6.9 (1H, broad s), 
7.35 (1H, s), 4.47 (2H, d, J-6.0 Hz), 4.00 (2H, s), 3.0-2.5 (4H, m), 
2.2-1.4 (4H, m). 
EXAMPLE 7 
1-Aminomethyl-3-iodo-5,6,7,8-tetrahydro-2-naphthol Hydrochloride 
The N-chloroacetylaminomethyl compound (prepared in Example 6) was treated 
by the procedure of Example 3, giving 69% yield of a white crystal of the 
title compound having the following physical properties. 
Melting Point: decomposed at a temperature higher than 180.degree. C. 
TLC (on a developer comprising n-butanol/glacial acetic acid/water at 
5:2:3): Rf=0.90. 
IR (KBr tablet method): .nu.=3350, 2940, 1600, 1570, 1460, 1430, 1380, 
1320, 1295, 1280, 1260, 1240, 1220, 1185, 1120, 1100, 950, 870, 855, 760, 
740 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6 solution): .delta.=9.10 (1H, broad s), 8.20 
(3H, broad s), 7.40 (1H, s), 4.00 (2H, broad s), 2.0-2.4 (4H, m), 2.0-1.5 
(4H, m). 
EXAMPLE 8 
1-(N-Carbobenzoxyaminomethyl)-3-iodo-5,6,7,8-tetrahydro-2-naphthol 
The amine hydrochloride (prepared in Example 7) was treated by the 
procedure of Example 4, giving 59% yield of a white crystal of the title 
compound having the following physical properties. 
TLC (on a developer of methylene chloride): Rf=0.50. 
IR (KBr tablet method): .nu.=3300, 3050, 2920, 1760, 1670, 1580, 1540, 
1460, 1415, 1380, 1360, 1340, 1280, 1240, 1195, 1165, 1135, 1090, 1070, 
1030, 975, 960, 915, 870, 830, 780, 760, 700, 620, 590, 580, 540, 460 
cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.93 (1H, broad s), 7.30 (1H, s), 7.20 
(5H, s), 5.45 (1H, broad s), 5.00 (2H, s), 4.30 (2H, d, J=6.0 Hz), 2.8-2.4 
(4H, m), 2.0-1.5 (4H, m). 
EXAMPLE 9 
1-Aminomethyl-3-iodo-5,6,7,8-tetrahydro-2-naphthol Hydrobromide 
The N-carbobenzoxyaminomethyl compound (prepared in Example 8) was treated 
by the procedure of Example 5, giving 70% yield of a white crystal of the 
title compound having the following physical properties. 
Melting Point: 215.degree.-217.degree. C. 
TLC (on a developing agent comprising n-butanol/glacial acetic acid/water 
at 5:2:3): Rf=0.70. 
IR (KBr tablet method): .nu.=3360, 3050, 2940, 1600, 1560, 1465, 1455, 
1435, 1405, 1375, 1320, 1300, 1280, 1260, 1245, 1190, 1110, 1100, 950, 
895, 870, 855, 760, 735, 570 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6 solution): .delta.=7.51 (1H, s), 4.04 (2H, 
broad s), 2.9-2.4 (4H, m), 2.0-1.4 (4H, m). 
MS: m/e=303, 286, 159, 130, 115, 103, 91, 82, 80, 77. 
EXAMPLE 10 
4-Iodo-5-indanol 
The procedure of Example 1 was repeated to treat 5-indanol, giving 46% 
yield of a colorless transparent oily substance of the title compound 
having the following physical properties. 
TLC (on a developer comprising methylene chloride/cyclohexane at 
1:1)=Rf=0.40. 
IR (film method): .nu.=3470, 2950, 2850, 1750, 1600, 1570, 1480, 1460, 
1440, 1375, 1335, 1280, 1240, 1230, 1190, 1100, 1020, 960, 910, 870, 815 
cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.5-6.6 (3H, m), 5.26 (1H, s), 3.3-1.8 
(6H, m). 
EXAMPLE 11 
4-Iodo-6-(N-chloroacetylaminomethyl)-5-indanol 
The procedure of Example 2 was repeated to treat the iodine compound from 
Example 10, giving 66% yield of a white crystal of the title compound 
having the following physical properties. 
TLC (on a developing agent comprising methylene chloride/cyclohexane at 
1:1): Rf=0.10. 
IR (KBr tablet method): .nu.=3300, 3100, 2920, 1630, 1560, 1450, 1430, 
1410, 1370, 1290, 1250, 1230, 1190, 1150, 1070, 1010, 930, 860, 795, 720, 
630, 580, 540, 440 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.98 (1H, broad s), 7.60-7.30 (1H, broad 
s), 6.95 (1H, s), 4.44 (2H, d, J=6.5 Hz), 4.05 (2H, s), 3.15-2.70 (4H, m), 
2.30-1.85 (2H, m). 
EXAMPLE 12 
4-Iodo-6-aminomethyl-5-indanol Hydrochloride 
The N-chloroacetylaminomethyl compound (prepared in Example 11) was treated 
by the procedure of Example 3, giving 65% yield of a white crystal of the 
title compound having the following physical properties. 
Melting Point: decomposed at 212.degree.-217.degree. C. 
TLC (on a developer comprising n-butanol/glacial acetic acid/water at 
5:2:3): Rf=0.73. 
IR (KBr tablet method): .nu.=3200, 2950, 1605, 1570, 1480, 1450, 1430, 
1375, 1280, 1140, 880 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6 solution): .delta.=7.1 (1H, s), 3.9 (2H, s), 
3.2-2.5 (4H, m), 2.3-1.7 (2H, m). 
EXAMPLE 13 
6-(N-Chloroacetylaminomethyl)-5-indanol 
The procedure of Example 2 was repeated using 5-indanol instead of the 
1-iodo compound prepared in Example 1, giving 32% yield of a white crystal 
of the title compound having the following physical properties. 
TLC (on a developer of methylene chloride): Rf=0.20. 
NMR (CDCl.sub.3 +dimethylsulfoxide-d.sub.6 solution): .delta.=9.2 (1H, 
broad s), 8.3 (1H, broad s), 7.20 (1H, s), 6.90 (1H, s), 4.45 (2H, d, 
J=6.0 Hz), 4.15 (2H, s), 3.2-2.5 (4H, m), 2.5-1.7 (2H, m). 
EXAMPLE 14 
4-Iodo-6-(N-chloroacetylaminomethyl)-5-indanol 
The N-chloroacetylaminomethyl compound (prepared in Example 13) was iodated 
by the procedure of Example 1, giving 31% yield of the title compound 
having the same physical properties as those of the compound prepared in 
Example 11. 
EXAMPLE 15 
1-Iodo-3-(N-acetyl-N-methyl)aminomethyl-5,6,7,8-tetrahydro-2-naphthol 
The 1-iodo-5,6,7,8-tetrahydro-2-naphthol (prepared in Example 1) was 
treated by repeating the procedure of Example 2 except that 
N-hydroxymethylchloroacetamide was replaced by 
N-methyl-N-hydroxymethylacetamide, giving 50% yield of a white crystal of 
the title compound having the following physical properties. 
Melting Point: 184.degree.-185.degree. C. 
TLC (on a developer of methylene chloride): Rf=0.13. 
IR (KBr tablet method): .nu.=1605 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=6.70 (1H, s), 4.35 (2H, s), 3.00 (3H, 
s), 2.90-2.35 (4H, m), 2.05 (3H, s), 2.00-1.45 (4H, m). 
EXAMPLE 16 
1-Iodo-3-(N-methylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol Hydrochloride 
The procedure of Example 3 was repeated to treat the 
(N-acetyl-N-methyl)aminomethyl compound (prepared in Example 15), giving 
85% yield of a white crystal of the title compound having the following 
physical properties. 
TLC (on a developer comprising ethyl acetate/acetic acid/water at 3:1:1): 
Rf=0.58. 
IR (KBr tablet method): .nu.=2940, 2700-2250, 1610, 1465, 1315 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=9.35-8.00 (1H, broad s), 7.00 (1H, broad 
s), 7.1-6.15 (1H, m), 4.5-3.6 (2H, m), 3.3-2.0 (7H, m), 2.0-1.3 (4H, m). 
EXAMPLE 17 
1-Iodo-3-(N,N-dimethylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol 
To a mixture of a solution of 513.1 mg of 
1-iodo-5,6,7,8-tetrahydro-2-naphthol (prepared in Example 1) in 1 ml of 
methanol and 0.2104 ml of 40% dimethylamine aqueous solution was added 
0.1515 ml of 37% formalin at 0.degree. to 5.degree. C., and the resulting 
solution was stirred at room temperature for 2 hours. The reaction mixture 
was concentrated under vacuum, and the resulting residue was purified by 
column chromatography on silica gel using an eluting agent comprising a 
mixture of ethyl acetate and cyclohexane (1:4), giving 230 mg of a pale 
brown oily product of the title compound having the following physical 
properties. 
TLC (on a developing agent comprising ethyl acetate and cyclohexane at 1:1) 
Rf=0.40. 
IR (film method): .nu.=2936, 2890, 2870, 2840, 2798, 1615, 1439, 1300, 
1259, 1885 (1085?), 1018, 780, 738 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=8.50 (1H, broad s), 6.57 (1H, s), 3.53 
(2H, s), 2.67 (4H, m), 2.30 (6H, s), 1.72 (4H, m). 
MS: m/e=331, 286, 159. 
EXAMPLE 18 
1-Iodo-3-(N,N-dimethylaminomethyl)-5,6,7,8-tetrahydro-2-naphthol 
Hydrochloride 
A solution of 230 mg of the N,N-dimethylamino compound (as prepared in 
Example 17) in 20 ml of methanol was mixed with 0.2 ml of concentrated 
hydrochloric acid under stirring. The solution mixture was filtered on 
activated carbon, and the filtrate concentrated under vacuum. The residue 
was recrystallized from a mixture of methanol and diethyl ether, giving 
156 mg of a white crystal of the title compound having the following 
physical properties. 
Melting Point: 30.degree.-33.degree. C. 
TLC (on a developing agent comprising ethyl acetate and cyclohexane 1:1): 
Rf=0.50. 
IR (KBr tablet method): .nu.=3300, 2940, 2855, 2830, 2700, 1630, 1460, 
1415, 1310, 1280, 1160, 1095, 780 cm.sup.-1. 
NMR (CDCl.sub.3 +D.sub.2 O solution): .delta.=7.09 (1H, broad s), 4.16 (2H, 
s), 2.76 (6H, s), 2.70 (4H, m), 1.76 (4H, m). 
EXAMPLE 19 
1-Methyl-6-(N-chloroacetylaminomethyl)-5-indanol 
A solution of 850 mg of 1 methyl-5-indanol in 5 ml of a mixed solution of 
acetic acid and sulfuric acid (10:1 by volume) solution was mixed with 850 
mg of N-hydroxymethyl chloroacetamide at room temperature under stirring 
for 2 hours. After reaction the reaction mixture was poured into 20 ml of 
water, extracted with ethyl acetate. The extract was washed with water, 
dried with anhydrous magnesium sulfate and concentrated under vacuum. The 
crude product thus obtained was purified by column chromatography on 100 g 
of Kiesel gel using an eluting agent comprising a mixture (20:1 by volume) 
of methylene chloride and ethyl acetate to provide 590 mg of the titled 
compound. 
TLC (on a developing agent methylenechloride and ethylacetate in a volume 
ratio of 10:1): Rf=0.32. 
IR (KBr tablet): .nu.=3300, 2950, 2860, 1710, 1650, 1540, 1495, 1450, 1430, 
1410, 1370, 1350, 1300, 1270, 1170, 1150, 1090, 1045, 1020, 925 cm.sup.-1. 
NMR (CDCl.sub.3): .delta.=7.35 (2H, broad, NH, OH), 6.82 (1H, s), 6.67 (1H, 
s), 4.35 (2H, d, J=6 Hz), 4.00 (2H, s), 3.30-2.60 (3H, m), 2.60-2.00 (1H, 
m), 2.00-1.20 (1H, m), 1.20 (3H, d, J=7 Hz). 
EXAMPLE 20 
1-Methyl-4-iodo-6-(N-chloroacetylaminomethyl)-5-indanol 
A solution of 570 mg of 1-methyl-6-(N-chloroacetylaminomethyl)-5-indanol 
which was obtained in EXAMPLE 19 in 3 ml of acetic acid was mixed with 570 
mg of monochloroiodine at room temperature followed by stirring at 
100.degree. C. for 2 hours. The resulting mixture was poured into 50 ml of 
water and extracted with ethyl acetate. The extract was washed with an 
aqueous solution of sodium thiosulfate (hypo) and then with water, dried 
with magnesium sulfate and condensed under vacuum. The residue was 
purified by column chromatography on silica gel using an eluting agent 
comprising a mixture (50:1) of methylene chloride and ethyl acetate to 
provide 410 mg of the titled compound. 
Melting Point: 117.degree.-120.degree. C. 
IR (KBr tablet): .nu.=3300, 3150, 2950, 1630, 1545, 1440, 1430, 1405, 1365, 
1330, 1290, 1275, 1245, 1225, 1200, 1165, 1150 cm.sup.-1. 
NMR (CDCl.sub.3): .delta.=7.92 (1H, --OH), 7.33 (1H, --NH--), 6.80 (1H, s), 
4.37 (2H, d, J=6 Hz), 4.00 (2H, s), 3.50-3.00 (1H, m), 3.00-2.60 (2H, m), 
2.60-2.00 (1H, m), 1.93-1.20 (1H, m), 1.20 (3H, d, J=7 Hz). 
EXAMPLE 21 
1-Methyl-4-iodo-6-aminomethyl-5-indanol hydrochloride 
A solution of 380 mg of 
1-methyl-4-iodo-6-(N-chloroacetylaminomethyl)-5-indanol which was obtained 
in EXAMPLE 20 in 4 ml of ethanol was mixed with 2 ml concentrated of 
hydrochloric acid and refluxed for 8 hours. The reaction mixture was 
concentrated to dryness under vacuum. The residue was washed with diethyl 
ether and dissolved in a small amount of methanol. The solution was mixed 
with diethyl ether to precipitate crystals which were then filtered and 
dried to provide 180 mg of the titled compound. 
Melting Point: 168.degree.-170.degree. C. (decomposed). 
TLC (on a developer of a mixture of n-butanol, acetic acid and water in a 
volume ratio of 5:3:2): Rf=0.76. 
IR (KBr tablet): .nu.=3400, 3200, 3020, 2950, 1605, 1495, 1450, 1430, 1380, 
1335, 1300, 1275, 1240, 1150 cm.sup.-1. 
NMR (CD.sub.3 OD): .delta.=7.00 (1H, s), 4.67 (4H, --OH, --NH.sub.3), 2.80 
(3H, m), 2.20 (1H, m), 1.55 (1H, m), 1.20 (3H, d, J=7 Hz). 
EXAMPLE 22 
1-Iodo-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol 
A solution of 3.97 g of 5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol in 12 ml 
of ethanol was mixed with 744 mg of ethylenediamine. To the resulting 
mixture was added dropwise an aqueous solution of 6.3 g of iodine and 5.3 
g of potassium iodide in 8 ml of water in 1.5 hours. The reaction mixture 
was poured into 100 ml of water, extracted with diethyl ether. The extract 
was washed with water, dried with magnesium sulfate and concentrated under 
vacuum. The residue was purified by column chromatography on 400 g of 
silica gel using an eluting agent comprising a mixture of methylene 
chloride and cyclohexane (1:1 by volume) to provide 2.18 g of white 
crystals of the titled compound. 
Melting Point: 65.degree.-68.degree. C. 
TLC (on a developer of methylene chloride): Rf=0.70. 
IR (KBr tablet method): .nu.=3400, 3160, 2960, 2940, 2870, 1665, 1600, 
1560, 1480, 1460, 1430, 1415, 1345, 1295, 1280, 1255, 935 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.03 (1H, d), 6.69 (1H, d), 5.2-4.7 (1H, 
--OH), 2.77-2.50 (2H, m), 2.00-1.43 (4H, m), 1.23 (6H, s). 
EXAMPLE 23 
1-Iodo-3-(N-chloroacetylaminomethyl)-5,5-dimethyl-5,6,7,8-tetrahydro-2-naph 
thol 
A solution of 2.08 g of 1-Iodo-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol 
in 15 ml of a mixture of acetic acid and sulfuric acid (10:1 by volume) 
was mixed with 1.40 g of N-hydroxymethyl chloroacetamide at room 
temperature under stirring for 3 hours. Thereafter, the mixture was poured 
into water and extracted with ethyl acetate. Ethyl acetate was distilled 
off from the extract and the residue was purified by column chromatography 
on 200 g of silica gel using methylene chloride as an eluting agent to 
provide 1.89 g of white crystals of the titled compound. 
Melting Point: 66.degree.-70.degree. C. 
IR (KBr tablet method): .nu.=3400, 3300, 2960, 2860, 1640, 1540, 1460, 
1440, 1260, 1140, 1080 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=7.53 (1H, s, --OH), 7.43-7.00 (1H, 
--NH--), 7.49 (1H, s), 4.17 (2H, d), 4.00 (2H, s), 2.77-2.50 (2H, m), 
2.00-1.33 (4H, m), 1.23 (6H, s). 
EXAMPLE 24 
1-Iodo-3-aminomethyl-5,5-dimethyl-5,6,7,8-tetrahydro-2-naphthol 
Hydrochloride 
A solution of 1.78 g of 
1-Iodo-3-(N-chloroacetylaminomethyl)-5,5-dimethyl-5,6,7,8-tetrahydro-2-nap 
hthol prepared in EXAMPLE 23 in 10 ml of ethanol was mixed with 3 ml of 
concentrated hydrochloric acid and heated at 100.degree. C. for 4 hours 
followed by condensing under vacuum. To the residue was added diethyl 
ether to precipitate crystals which were filtered and recrystallized from 
a mixed solvent of ethanol and diethyl ether to provide 550 mg of white 
crystals of the title compound. 
Melting Point: 120.degree.-122.degree. C. 
TLC (on a developer of ethylacetate 3: acetic acid 1: water 1 (volume to 
volume ratio)):Rf=0.70. 
IR (KBr tablet method): .nu.=3380, 3040, 2960, 2870, 1610, 1470, 1415, 
1300, 1220, 1145 cm.sup.-1. 
NMR (CD.sub.3 OD solution): .delta.=7.23 (1H, s), 4.09 (2H, s), 2.83-2.49 
(2H, m), 2.09-1.43 (4H, m), 1.27 (6H, s). 
EXAMPLE 25 
1-Iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol Hydrobromide 
(1) Preparation of 3-Hydroxy-5,6,7,8-tetrahydro-2-naphthoic Acid Methyl 
Ester 
A 281 g sample of 3-hydroxy-5,6,7,8-tetrahydro-2-naphthoic acid was 
dissolved in 1.4 l of methanol, and while hydrogen chloride gas was 
supplied, the solution was first exposed to room temperature for 2 hours, 
and then heated at 60.degree. to 70.degree. C. for 4 hours. Methanol was 
distilled off under vacuum, water was added to the residue, which was then 
extracted with ethyl acetate. The ethyl acetate layer was washed with 
sodium bicarbonate until it became neutral, and then it was dehydrated and 
concentrated. The residual oily product was distilled under vacuum to 
provide 279 g of the title compound (1) having the following physical 
properties. 
Boiling Point: 115.degree.-116.degree. C./0.07-0.08 mm Hg. 
NMR (CDCl.sub.3 solution): .delta.=7.40 (1H, s), 6.57 (1H, s), 4.17 (3H, 
s), 2.87-2.17 (4H, m), 2.00-1.30 (4H, m). 
(2) Preparation of 3-Hydroxy-5,6,7,8-tetrahydro-2-naphthoic Amide 
To 300 ml of methanol saturated with ammonia gas at 0.degree. C. was added 
122 g of 3-hydroxy-5,6,7,8-tetrahydro-2-naphthoic acid methyl ester, and 
the mixture was maintained in an autoclave at 100.degree. C. for 5 hours. 
After cooling, the precipitating solid was filtered off, washed with a 
small amount of methanol, and dried, giving 96 g of a pale yellow crystal 
having the following physical properties. 
Melting Point: higher than 200.degree. C. 
IR (KBr tablet method): .nu.=3240, 3190, 2940, 1660, 1640, 1585, 1500, 
1425, 1365, 1270, 1100 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6 solution): .delta.=7.43 (1H, s), 6.48 (1H, 
s), 8.3-6.5 (broad --CONH.sub.2, --OH), 2.85-2.18 (4H, m), 1.98-1.33 (4H, 
m). 
(3) Preparation of 3-Aminomethyl-5,6,7,8-tetrahydro-2-naphthol 
Hydrochloride 
To 2.5 l of dry tetrahydrofuran was first added 57 g of lithium aluminum 
hydride, then added gradually 82 g of the amide prepared in step (2), and 
the mixture was refluxed for 20 hours. After cooling, ethyl acetate was 
gradually added to the mixture to decompose excess lithium aluminum 
hydride. The reaction mixture was poured into 2 l of 2 N aqueous NaOH 
solution and extracted with ethyl acetate three times. The ethyl acetate 
layer was water washed, dehydrated, and concentrated under vacuum. Because 
partial acetylation of amino group occurred, the residue was dissolved in 
1 l of ethanol and 150 ml of concentrated hydrochloric acid upon heating, 
and refluxed for 15 hours. After cooling, the precipitating solid was 
filtered off, and the mother liquor was concentrated to a small volume, 
followed by filtering off of the precipitating solid. A total of 50 g of 
the title compound (3) having the following physical properties was 
obtained. 
Melting Point: 216.degree.-218.degree. C. 
IR (KBr table method): .nu.=3100, 2940, 2800-2300, 1560, 1510, 1440, 1200, 
1120 cm.sup.-1. 
NMR (dimethylsulfoxide-d.sub.6): .delta.=9.6 (1H, broad), 8.1 (3H, broad), 
7.87 (1H, s), 6.53 (1H, s), 4.1-3.5 (2H, m), 2.9-2.2 (4H, m), 2.0-1.4 (4H, 
m). 
(4) Preparation of 
3-Carbobenzyloxy-aminomethyl-5,6,7,8-tetrahydro-2-naphthol 
In 450 ml of water was suspended 49.5 g of the amine hydrochloride obtained 
in step (3), and while cooling, 140 m of 2 N NaOH aqueous solution was 
added to the suspension. To the mixture was simultaneously added dropwise 
135 ml of 2 N NaOH aqueous solution and 170 ml of 30% solution of 
carbobenzyloxychloride in toluene in about 30 minutes under stirring. 
After completion of dropwise addition, the reaction mixture was stirred 
for 30 minutes and extracted with ethyl acetate. The ethyl acetate layer 
was water washed, dehydrated and concentrated to a small volume. The 
precipitating solid was filtered off, which was then washed with 
cyclohexane containing about 5% ethyl acetate, and dried to provide 52 g 
of the title compound (4) having the following physical properties. 
Melting Point: 113.5.degree.-115.degree. C. 
IR (KBr tablet method): .nu.=3300, 2940, 2850, 1670, 1555, 1505, 1295, 
1100, 1000, 740 cm.sup.-1. 
NMR (CDCl.sub.3 solution): .delta.=8.1-7.63 (1H, --OH), 7.22 (5H, s), 6.70 
(1H, s), 6.57 (1H, s), 5.67-5.25 (1H, --NH--CO--), 5.03 (2H, s), 4.17 (2H, 
d, J=6 Hz), 2.93-2.35 (4H, m), 2.0-1.72 (4H, m). 
(5) Preparation of 
1-Iodo-3-carbobenzyloxy-aminomethyl-5,6,7,8-tetrahydro-2-naphthol 
In 750 ml of ethanol was dissolved 50 g of the compound (4) under heating, 
and 7.5 g (8.35 L ml) of ethylenediamine was added to the solution. A 
mixture of 50.8 g of iodine and 41.5 g of potassium iodide was dissolved 
in 500 ml of water, and the resulting aqueous solution was added dropwise 
to the previously prepared solution over about 30 minutes under stirring 
at 30.degree. C. After additional 1 hour`s stirring, the precipitating 
solid was filtered off, which was washed with 50% ethanol, and dried to 
provide 59 g of the title compound (5) having the following physical 
properties. 
Melting Point: 116.degree.-117.degree. C. 
IR and NMR were exactly the same as those obtained for the compound of 
EXAMPLE 4. 
(6) Preparation of 1-Iodo-3-aminomethyl-5,6,7,8-tetrahydro-2-naphthol 
Hydrobromide 
To 50 g of the compound (5) was added 120 ml of 30% solution of hydrogen 
bromide in acetic acid, and the mixture was maintained at room temperature 
for 30 minutes. After addition of 3 l of ether, the resulting mixture was 
left standing. The precipitating solid was filtered off, which was then 
washed with ether, and dried. A 28 g sample of the solid was dissolved in 
100 ml of methanol, filtered on activated carbon, and the filtrate was 
combined with 200 ml of ether, after which the mixture was allowed to 
cool, and left standing. The precipitated solid was filtered off, washed 
with ether, and dried to obtain 19 g of the title compound (6) having the 
following physical properties. 
Melting Point: 204.degree.-206.degree. C. 
IR, NMR and TLC were exactly the same as those obtained for the compound of 
EXAMPLE 5. 
While the invention has been described in detail and with reference to 
specific embodiments thereof, it will be apparent to one skilled in the 
art that various changes and modifications can be made therein without 
departing from the spirit and scope thereof.