Patent ID: 7105545

Claim:
A compound of formula I including the optical isomers thereof and mixtures of such isomers, wherein R 1 is hydrogen, alkyl, cycloalkyl or optionally substituted aryl, R 2 and R 3 are each independently hydrogen or alkyl, R 4 is alkyl, alkenyl or alkynyl, R 5 , R 6 , R 7 , and R 8 are each independently hydrogen or alkyl, R 9 is hydrogen, optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl, R 10 is optionally substituted aryl or optionally substituted heteroaryl, and Z is hydroxy, optionally substituted aryloxy, optionally substituted alkoxy, optionally substituted alkenyloxy, optionally substituted alkynyloxy, optionally substituted arylthio, optionally substituted alkylthio, optionally substituted alkenylthio, optionally substituted alkynylthio, optionally substituted alkylsulfinyl, optionally substituted alkenylsulfinyl, optionally substituted alkynylsulfinyl, optionally substituted alkylsulfonyl, optionally substituted alkenylsulfonyl, optionally substituted alkynylsulfonyl or a group —O—CO—R 11 , —O—CO—O—R 11 or —O—CO—CO—O—R 11 wherein R 11 is hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted heteroaryl.