Stereocontrolled entry to the tricyclo[3.3.0]oxoheptane core of bielschowskysin by a [2+2] cycloaddition of an allene-butenolide
摘要:
As part of ongoing transannulation studies, the practical synthesis of an allene-linked gamma-butenolide from L-malic acid and its substrate-controlled [2+2] photocycloaddition to the tricyclic core of bielschowskysin (1) are described. (C) 2009 Elsevier Ltd. All rights reserved.
Stereocontrolled entry to the tricyclo[3.3.0]oxoheptane core of bielschowskysin by a [2+2] cycloaddition of an allene-butenolide
摘要:
As part of ongoing transannulation studies, the practical synthesis of an allene-linked gamma-butenolide from L-malic acid and its substrate-controlled [2+2] photocycloaddition to the tricyclic core of bielschowskysin (1) are described. (C) 2009 Elsevier Ltd. All rights reserved.