Asymmetric synthesis and structure-activity studies of the fungal metabolites colletorin A, colletochlorin A and their halogenates analogues
作者:Giulia Marsico、Barbara A. Pignataro、Marco Masi、Antonio Evidente、Francesca Casella、Maria Chiara Zonno、Jun-Hyung Tak、Jeffrey R. Bloomquist、Stefano Superchi、Patrizia Scafato
DOI:10.1016/j.tet.2018.05.077
日期:2018.7
The first asymmetric totalsynthesis of both enantiomers of the naturalproducts colletorin A and colletochlorin A is presented. The proposed methodology is based on the coupling reaction between highly substituted aromatic Gilman cuprates and optically active allyl bromides, in turn obtained by Sharpless asymmetric dihydroxylation. The latter ensured a high degree of regio- and stereocontrol in the
Absolute Configuration Assignment to Chiral Natural Products by Biphenyl Chiroptical Probes: The Case of the Phytotoxins Colletochlorin A and Agropyrenol
the absolute configurationassignment to chiral natural products is described. The method is straightforward and reliable and can be applied to conformationally mobile and ECD silent compounds, not treatable by computational analysis of chiroptical data. By this approach, the (6'R) absolute configuration of the phytotoxin colletochlorin A (1) was confirmed, while the absolute configuration of the phytotoxin
Preparation of chiral 1,3 skipped anti- and syn-tetrols via highly enantioselective biocatalytic resolution
作者:Carlo Bonini、Lucia Chiummiento、Maria Funicello
DOI:10.1016/s0957-4166(01)00467-0
日期:2001.10
Biocatalytic resolution of the 7-benzyloxy-3,5-anti-dioxolan-1,3 5,7-tetrol and the 7-benzyloxy-3,5-syn-dioxolan-1,3,5,7-tetrol was found to be highly enantioselective leading to differently functionalized chiral tetrols with significantly high e.e. (C) 2001 Elsevier Science Ltd. All rights reserved.