[EN] AZA-EPOXY-GUAIANE DERIVATIVES AND TREATMENT OF CANCER<br/>[FR] DERIVES D'AZA-EPOXY-GUAIANE ET TRAITEMENT DU CANCER
申请人:US HEALTH
公开号:WO2015120140A1
公开(公告)日:2015-08-13
Disclosed is a compound of formula (I) or formula (II): (Formulas should be inserted here) wherein R1-R6 are as defined herein. Also disclosed are a pharmaceutical composition comprising such a compound and a method of treating or preventing cancer in a mammal in need thereof, comprising administering to the mammal a compound of formula (I) or formula (II).
Englerins A and B are guaiane sesquiterpenes that were isolated from the bark of Phyllanthus engleri, a plant indigenous to east Africa. The englerins consist of a 5-6-5 fused tricyclic structure with an ether bridge and two ester-bearing stereogenic centers, including a highly unusual glycolate residue. Englerin A is a potent and selective inhibitor of the growth of six human renal cancer cell lines. We report herein an efficient, eight-step synthesis of englerin A that leverages simple carbonyl-enabled carbon carbon bond formations. Our route is amenable to the production of a diverse series of analogues for structure function studies and determination of the mode of action of these natural products.