(-)-cis-α-Ambrinol is a natural product present in ambergris, a substance of marine origin that has been highly valued by perfumers. In this paper, we present a new approach to its totalsynthesis. The starting material is commercially available α-ionone and the key step is an intramolecular Barbier-type cyclization induced by CpTiCl2, an organometallic compound prepared in situ by a CpTiCl3 reduction
Studies on furoterpenes: Stereoselective total synthesis of (±)-Ambliol-A and Dendrolasin
作者:Arindam Chakraborty、Gandhi K Kar、Jayanta K Ray
DOI:10.1016/s0040-4020(97)00509-7
日期:1997.6
(±)-Ambliol-A (1) is totally synthesised with high stereoselectivity starting from α-ionone and [3-(3′-furyl)propyl]triphenylphosphonium bromide (3). In another attempt utilising 3 with the commercially available ketone 11 the totalsynthesis of Dendrolasin (12) has also been achieved.