Metabolic products of microorganisms. Part 262. The absolute configuration of sphydrofuran, a widespread metabolite from streptomycetes
作者:Kai U. Bindseil、Thomas Henkel、Axel Zeeck、Daniel Bur、Daniel Niederer、Urs Séquin
DOI:10.1002/hlca.19910740617
日期:1991.9.18
Sphydrofuran (1) was isolated from the culture filtrate of Streptomyces sp. (strain Gö 28 and Tü 3616) by chemical screening methods. Metabolite 1 is an anomeric and ring-chain tautomeric mixture and could easily be transformed into the stable furan derivative 2 under acidic conditions. The constitution and relative configuration of 1 was established by X-ray crystallography of its 8-O-methyl derivative
Chemo-enzymatic synthesis of natural products: synthesis of sphydrofuran
作者:Balu P. Maliakel、Walther Schmid
DOI:10.1016/s0040-4039(00)92071-9
日期:1992.6
methods as well as via a diastereoselective Grignardreaction. Rabbit muscle aldolase (RAMA)-catalyzed aldol condesation of chloroacetaldehyde 3 with dihydroxyacetone phosphate (DHAP) 4 affords the C-5 skeleton of 5 which was transformed to sphydrofuran 1 and its analogue 10 via a Grignard addition of allylmagnesiumbromide followed by a Wacker reaction.