Straightforward synthesis of cytosporone analogs AMS35AA and AMS35BB

Abstract

Cytosporones, a class of octaketide resorcinolic lipids, have drawn the attention of researchers for exhibiting a number of notable biological properties. Herein, we describe routes to synthesize the bioactive synthetic resorcinolic lipids AMS35AA and AMS35BB with excellent overall yields using 3,5-dimethoxybenzoic acid as the starting material. The methods proved remarkably efficient to achieve the target compounds and comprise the synthesis of AMS35AA catalyzed by ascorbic acid (vitamin C).

Key words
cytosporones; Friedel–Crafts acylation; organocatalysis; methanolysis; vitamin C