Process for producing pyripyropene derivatives

Details Process for producing pyripyropene derivatives Process for producing pyripyropene derivatives

C - Chemistry, Metallurgy

07

D

C07D 405/04 (2006.01) C07B 61/00 (2006.01)

Patent

CA 2760078

A process for efficiently producing a pyripyropene derivative having acyloxy groups in the 1- and 11- positions and a hydroxy group in the 7-position. The process comprises a step in which the hydroxy groups in the 1- and 11-positions of the compound represented by formula (B1) are selectively acylated with an acylating agent in the presence or absence of a base in one to three stages.

La présente invention a pour objet un procédé permettant de produire efficacement un dérivé du pyripyropène ayant des groupes acyloxy en positions 1 et 11 et un groupe hydroxy en position 7. Le procédé comprend une étape dans laquelle les groupes hydroxy en positions 1 et 11 du composé représenté par la formule (B1) sont acylés sélectivement au moyen d'un agent d'acylation en présence ou en l'absence d'une base en un à trois stades.

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