FIELD: chemistry.SUBSTANCE: invention relates to a method of producing a compound C of formula: [1] where R' is a linear, branched or cyclic C2-6 alkyl carbonyl group. In this method, the protective group for the hydroxy group in position 7 used is R1b； where R1b is a formyl group, optionally substituted with a linear C1-4 alkyl carbonyl group, optionally substituted benzyl group, a -SiR3R4R5 group, where R3, R4 and R5 are independently a linear or branched C1-4 alkyl group or a phenyl group, which can be substituted with a halogen atom, a C1-6alkyloxy-C1-6alkyl group, which can be substituted with a halogen atom, C1-6alkylthio-C1-6alkyl group, which can be substituted with a halogen atom, a linear, branched or cyclic C1-6alkyl group, which can be substituted with a halogen atom (in case of branched or cyclic, denotes a C3-4alkyl group), C2-6alkenyl group, which can be substituted with a halogen atom, C2-6alkynyl 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 exИзобретение относится к способу получения соединения С, которое представлено следующей формулой С:где R' представляет собой линейную, разветвленную или циклическую группу С2-6алкилкарбонильную группу. В этом способе в качестве защитной группы для гидроксигруппы в 7-положении используют R1b, где R1b представляет собой формильную группу, необязательно замещенную линейную С1-4алкилкарбонильную группу, необязательно замещенную бензильную группу, группу -SiR3R4R5, где R3, R4 и R5 независимо представляют собой линейную или разветвленную С1-6ал
