Patent ID: 8853431

Claim:
A compound of formula V wherein R 3 is hydrogen or R 30 , R 31 , R 32 are, independently of one another, hydrogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy; R 5 is hydrogen, or hydroxyl or together with R 6 can be a double bond; R 6 is hydrogen, or together with R 5 or R 7 is a double bond; or together with R 7 is an α or β-CH 2 group; R 7 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxycarbonyl, C 1 -C 4 -thioacyl; or together with R 6 is a double bond or an α or β-CH 2 group; R 10 is hydrogen, methyl or ethyl; R 13 is methyl, or ethyl; R 15 is hydrogen, or C 1 -C 4 -alkyl, or together with R 16 is a —CH 2 group or a double bond; R 16 is hydrogen or together with R 15 is a —CH 2 group or a double bond, and R 40 , R 41 , R 42 independently of one another is hydrogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy.