Strategy and construction of the backbone bistetrahydrofuran system towards synthesis of rollinicin

Abstract

Rollinicin(I), uvaricin(II) and cherimoline(III), the new antitumour, antibiotic agents, isolated from renewable resources having bistetrahydrofuran ring system in the molecules, have been recently reported. Bates has postulated that uvaricin has been probably biosynthesised from 1,5,9-trienoic acid derivative. The central portion of I-III, a bistetrahydrofuran ring system, is apparently novel. This prompted us to develop a methodology for the construction of the central bistetrahydro-furan ring system (L) using acetylenic derivatives as the starting materials for the first time. In this communication, we report 4 its result.