Patent EP-0371882-A3 (EP)
Title: Abscisic acid-related plant growth regulators - germination promoters
IPC: A01N33/04
Filed: 1989-11-30
Abstract: Composition for enhancing germination and growth 
of plants which comprises an effective amount of at least 
one abscisic acid-related compound having the following 
formula (I): 
  
wherein  
R may be carboxyl aldehyde, hydroxy, hydroxyloweralkyl, 
alkoxyloweralkyl, loweralkoxycarbonyl, loweracyloxy­
loweralkyl, acetylloweralkyl, loweralkanoyl, 
loweralkylamino, diloweralkylamino, loweralkoxy, 
loweracyloxy, loweralkylthio, loweralkyl sulphonyl, 
loweralkyl sulphinyl, amino, carbonyl halogen, thio, 
phosphate, sulfoxide, sulfone or deuterium;  
R¹ may be hydrogen, oxo, hydroxyloweralkyl, loweralkoxy, 
halogen, thio, sulfoxide, sulfone, phosphate or deuterium;  
R² may be hydrogen, oxo, hydroxy, halogen thio, phosphate, 
sulfoxide, sulfone or deuterium;  
R³ may be carboxyl, aldehyde, loweralkyl, hydroxy­
loweralkyl, alkoxyloweralkyl, loweralkoxycarbonyl, 
loweracyloxyloweralkyl, acetylloweralkyl, loweralkanoyl, 
loweralkylamino, diloweralkylamino, loweralkoxy, 
 
 
loweracyloxy, loweralkylthio, loweralkyl sulphonyl, 
loweralkyl sulphinyl, or carbonyl;  
and when R² is oxo or thio, R² may be linked to both C₁ and 
C₂ carbon atoms to form an epoxy or a thioepoxy ring;  
R⁴ may be hydrogen, oxo, halogen, thio, phosphate, 
sulfoxide, sulfone, deuterium, hydroxy, loweralkyl­
siloxane, carboxyl, aldehyde, hydroxyloweralkyl, 
alkoxyloweralkyl, loweralkoxycarbonyl, loweracyloxy­
loweralkyl, acetylloweralkyl, loweralkanoyl, loweralkyl­
amino, diloweralkylamino, loweralkoxy, loweracyloxy, 
loweralkylthio, loweralkyl sulphonyl, loweralkyl 
suiphinyl, amino, carbonyl, cycloalkyl or cycloalkoxy 
having from 4 to 6 carbon atoms which is optionally 
substituted by loweralkyl, halogen, oxygen, hydroxy or 
loweralkoxy;  
R⁵ may be carboxyl, hydroxy, aldehyde, hydroxyloweralkyl, 
alkoxyloweralkyl, loweralkoxycarbonyl, loweracyl­
oxyloweralkyl, acetylloweralkyl, acetoxyloweralkyl, 
loweralkanoyl, loweralkylamino, diloweralkylamino, 
loweralkoxy, loweracyloxy, loweralkylthio, loweralkyl 
sulphonyl, loweralkyl sulphinyl, amino, carbonyl, 
halogen, hydrogen, oxo, thio, phosphate, sulfoxide, 
sulfone or deuterium, and when R⁵ is oxo, it may be linked 
to the carbon atom bearing R³;  
R⁶ may be hydrogen, oxo, hydroxyloweralkyl, loweralkoxy, 
halogen, thio, sulfoxide, sulfone, phosphate or deuterium;  
 
 
R⁷ may be carboxyl, hydroxy, aldehyde, hydroxyloweralkyl, 
alkoxyloweralkyl, loweralkoxycarbonyl, loweracyl­
oxyloweralkyl, acetylloweralkyl, acetoxyloweralkyl, 
loweralkanoyl, loweralkylamino, diloweralkylamino, 
loweralkoxy, loweracyloxy, loweralkylthio, loweralkyl 
sulphonyl, loweralkyl sulphinyl, amino, carbonyl, 
halogen, hydrogen, oxo, thio, phosphate, sulfoxide, 
sulfone or deuterium, and when R⁷ is oxo, it may be linked 
to the carbon atom bearing R³; and wherein  
the dotted lines may each represent a single bond and the 
double dotted line represents either a double bond or a 
triple bond,  
R¹ or R⁶ is absent if the dotted line adjacent to R¹ and R⁶ 
is a single bond,  
and isomers and functional derivatives thereof,  
in admixture with an acceptable agricultural carrier 
comprising an agriculturally acceptable carrier cation 
when R, R¹, R², R⁴, R⁵, R⁶ or R⁷ are phosphate, sulfoxide or 
sulfone.