METHOD OF PRODUCING PYRIPYROPENE DERIVATIVES AND INTERMEDIATE PRODUCTS FOR PRODUCTION THEREOF Russian patent published in 2013 - IPC C07D493/04 A01N43/90 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a compound C of formula: [1] where R' is a linear, branched or cyclic C_2-6 alkyl carbonyl group. In this method, the protective group for the hydroxy group in position 7 used is R_1b; where R_1b is a formyl group, optionally substituted with a linear C_1-4 alkyl carbonyl group, optionally substituted benzyl group, a -SiR₃R₄R₅ group, where R₃, R₄ and R₅ are independently a linear or branched C_1-4 alkyl group or a phenyl group, which can be substituted with a halogen atom, a C_1-6alkyloxy-C_1-6alkyl group, which can be substituted with a halogen atom, C_1-6alkylthio-C_1-6alkyl group, which can be substituted with a halogen atom, a linear, branched or cyclic C_1-6alkyl group, which can be substituted with a halogen atom (in case of branched or cyclic, denotes a C_3-4alkyl group), C_2-6alkenyl group, which can be substituted with a halogen atom, C_2-6alkynyl group, which can be substituted with a halogen atom, or an optionally substituted saturated or unsaturated 5-member or 6-member heterocyclic group. The invention also includes methods of producing intermediate compounds B2a and B2b and the compound of formula 2Bb itself.

EFFECT: method enables to obtain a pyripyropene derivative with high output, which contains an acyloxy group in position 1 and in position 11 and a hydroxy group in position 7; such a pyripyropene derivative can be used as a pest control agent.

15 cl, 26 ex