Patent ES-396100-A1 (ES)
Title: NEW beta-PHENYL-FATTY ACID COMPOUNDS
IPC: A61K31/19
Filed: 1971-10-18
Abstract: Novel compounds I in which X is free, esterified or amidated carboxyl A is a free or substituted OH group or together with B forms a bond B is H, aliphatic hydrocarbyl, with A forms a bond or with R 2 forms a divalent aliphatic hydrocarbon residue R 1 is H or aliphatic hydrocarbyl R 2 is as R 1 or with B forms a divalent aliphatic hydrocarbon residue Ph is phenylene optionally substituted by alkyl, halo, CF 3 , amino or nitro and R is cycloaliphatic hydrocarbyl which may be substituted are prepared by: (1) reacting R-Ph-COR 1 in the presence of Zn with Hal-C(B)(R 2 )-X 0 where X 0 is esterified carboxyl (2) decarboxylating (3) isomerizing R-Ph-C(=R 1 1)-CHR 2 -X where R 1 1 is a divalent residue of aliphatic character in which the free valencies emanate from the same carbon atom or (4) converting the CN group in to X and where necessary in (1)-(4) conventionally modifying the products to give other compounds I. Novel compounds II are prepared by (1) splitting off the residues Y11 in (one Y11 is H, the other a free or reactively esterified OH) or (2) isomerizing a compound R-Ph-C(R 1 ) = C(R 2 )-X followed in either (1) or (2) by conventional modification as necessary. Intermediates isolated are 2-[p-(11-hydroxy-11- cyclohexyl)-phenyl]-2-methyl-1,3-dioxolan, prepared by reaction of 2-(p-bromo-phenyl)-2- methyl-1,3-dioxolan with cyclohexanone p- (1-cyclohexenyl)-acetophenone, prepared by the action of conc. HCl in the first-named intermediate 2-(m-bromophenyl)-2-methyl-1,3-dioxolan, prepared from ethylene glycol and m-bromoacetophenone 2-[m-(11-hydroxy-11-cyclohexyl)- phenyl]-2-methyl-1,3-dioxolan, prepared similarly to the first-named intermediate m-(1-cyclohexenyl)-acetophenone, prepared by action of cone. HCl on the last-named intermediate 2-[p- (11 - hydroxy - 11 - cycloheptyl) - phenyl] - 2- methyl-1,3-dioxolan and p-(-cycloheptenyl)-acetophenone, prepared similarly to the first- and second-named intermediates 2-[p-(11-hydroxy- 11-cyclopentyl)-phenyl]-2-methyl-1,3-dioxolan and p-(1-cyclopentenyl)acetophenone, prepared similarly to the first- and second-named intermediates 2-[p-(4-methoxy-1-hydroxy-cyclohexyl)-phenyl]-2-methy.-1,3-dioxolan and p-(4-methoxy-1- cyclohexenyl)-acetophenone, prepared similarly to the first- and second-named intermediates 2-[p-(2 - methyl- 1 - hydroxy - cyclohexyl) - phenyl]- 2-methyl-1,3-dioxolan, prepared similarly to the first-named intermediate a mixture of p-(6- methyl-1-cycloheexnyl)- and p-(2-methyl-1-cyclohexenyl)-acetophenone, prepared by reaction of the last-named intermediate with 2NHCl pcyclohexyl-benzoic acid amide, prepared from the acid chloride by reaction with NH 3 p-cyclohexylbenzonitrile, prepared by reaction of the lastnamed intermediate with POCl 3 p-cyclohexylbenzaldehyde, prepared from the last-named intermediate by reaction with HCl gas in the presence of SnCl 4 and p-cycloheryl-benzylidenemalonic acid, prepared from the last-named intermediate by reaction with diethyl malonate, followed by hydrolysis. Pharmaceutical compositions comprise a compound I or II together with a suitable carrier and have analgesic and anti-inflammatory activity when administered, enterally, parenterally or topically.