Patent number: 5026708
Abstract: A compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl, C.sub.1-3 alkoxy, n-butoxy, i-butoxy, sec-butoxy, R.sup.5 R.sup.6 N-- (wherein R.sup.5 and R.sup.6 are independently hydrogen or C.sub.1-3 alkyl), trifluoromethyl, trifluoromethoxy, difluoromethoxy, fluoro, chloro, bromo, phenyl, phenoxy, benzyloxy, hydroxy, trimethylsilyloxy, diphenyl-t-butylsilyloxy, hydroxymethyl or --O(CH.sub.2).sub.l OR.sup.15 (wherein R.sup.15 is hydrogen or C.sub.1-3 alkyl, and l is 1, 2 or 3); or when located at the ortho position to each other, R.sup.1 and R.sup.2 together form --CH.dbd.CH--CH.dbd.CH-- or methylene dioxy; Y is --CH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --CH.sub.2 --CH.dbd.CH-- or --CH.dbd.CH--CH.sub.2 --; Z is --Q--CH.sub.2 WCH.sub.2 --CO.sub.2 R.sup.12, ##STR2## (wherein Q is --C(O)--, --C(OR.sup.13).sub.2 -- or --CH(OH)--; W is --C(O)--, --C(OR.sup.13).sub.2 -- or --C(R.sup.11) (OH)--; R.sup.11 is hydrogen or C.sub.
Type:
Grant
Filed:
September 12, 1988
Date of Patent:
June 25, 1991
Assignee:
Nissan Chemical Industries Ltd.
Inventors:
Yoshihiro Fujikawa, Mikio Suzuki, Hiroshi Iwasaki, Mitsuaki Sakashita, Masaki Kitahara
Patent number: 5011930
Abstract: A compound of the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.6 are independently hydrogen, C.sub.1-6 alkyl, C.sub.1-6 cycloalkyl, C.sub.1-3 alkoxy, n-botoxy, i-botoxy, sec-butoxy, R.sup.7 R.sup.8 N-- (wherein R.sup.7 and R.sup.8 are independently hydrogen or C.sub.1-3 alkyl), trifluoromethyl, trifluoromethoxy, difluoromethoxy, fluoro, chloro, bromo, phenyl, phenoxy, benzyloxy, hydroxy, trimethylsilyloxy, diphenyl-t-butylsilyloxy, hydroxymethyl or --O(CH.sub.2).sub.l OR.sup.19 (wherein R.sup.19 is hydrogen or C.sub.1-3 alkyl, and l is 1,2 or 3); or when located at the ortho position to each other, R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 together form --CH.dbd.CH--CH.dbd.CH--; or when located at the ortho position to each other, R.sup.1 and R.sup.2 together form --OC(R.sup.15)(R.sup.16)O-- (wherein R.sup.15 and R.sup.16 are independently hydrogen or C.sub.1-3 alkyl); Y is --CH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --CH.sub.2 CH.dbd.CH-- or --CH.dbd.CH-- CH.sub.
Type:
Grant
Filed:
February 23, 1990
Date of Patent:
April 30, 1991
Assignee:
Nissan Chemical Industries Ltd.
Inventors:
Yoshihiro Fujikawa, Mikio Suzuki, Hiroshi Iwasaki, Mitsuaki Sakashita, Masaki Kitahara