Enzymatic Synthesis of an Indole Diterpene by an Oxidosqualene Cyclase: Mechanistic, Biosynthetic, and Phylogenetic Implications
作者:Quanbo Xiong、Xiuwen Zhu、William K. Wilson、A. Ganesan、Seiichi P. T. Matsuda
DOI:10.1021/ja036322v
日期:2003.7.1
Petromindole (1) is an unusual indole diterpene that bears a triterpene-like carbon skeleton, suggesting biogenesis from 3-(omega-oxido-geranylgeranyl)indole (4). We found that lupeol synthase (LUP1) from Arabidopsis thaliana cyclizes 4 to 1. Chiral HPLC comparisons of racemic 1 (from biomimetic cyclization of N-pivaloyl-4) with the LUP1 product and authentic 1 established the absolute stereochemistry
Biomimetic Enantioselective Total Synthesis of (−)-Petromindole
作者:Dattatraya H. Dethe、Susanta Kumar Sau
DOI:10.1021/acs.orglett.7b03768
日期:2018.2.2
The first enantioselectivetotalsynthesis of (−)-petromindole, an architecturally distinct congener of indole diterpene family, has been achieved. Key features of this synthetic route include the scalable and concise synthesis of tricyclic allylic alcohol from enantiopure Wieland–Mischer ketone derivative, and TMSOTf-mediated, highly efficient biomimetic C-4 cyclization of indole derivative for the