An enantioselective synthesis of the core unit of the non-nucleoside reverse transcriptase inhibitor taurospongin A
摘要:
An enantioselective formal synthesis of taurospongin A has been achieved. The key steps involve chelation-controlled reductions of beta-ketosulfoxide and beta-hydroxy ketone intermediates and Sharpless asymmetric epoxidation to construct the tertiary alcohol stereoselectively. (C) 2003 Elsevier Science Ltd. All rights reserved.
An enantioselective synthesis of the core unit of the non-nucleoside reverse transcriptase inhibitor taurospongin A
摘要:
An enantioselective formal synthesis of taurospongin A has been achieved. The key steps involve chelation-controlled reductions of beta-ketosulfoxide and beta-hydroxy ketone intermediates and Sharpless asymmetric epoxidation to construct the tertiary alcohol stereoselectively. (C) 2003 Elsevier Science Ltd. All rights reserved.
Merging Asymmetric [1,2]-Additions of Lithium Acetylides to Carbonyls with Type II Anion Relay Chemistry
作者:Kevin T. O’Brien、Amos B. Smith
DOI:10.1021/acs.orglett.9b02959
日期:2019.9.20
union of a variety of lithium acetylides and electrophiles exploiting an achiral linchpin via an anionic reaction cascade. This Type II AnionRelayChemistry tactic is initiated via an enantioselective [1,2]-carbonyl addition exploiting BINOL catalysis to access an enantioenriched alkoxide intermediate. Migration of charge across the linchpin via a [1,4]-Brook rearrangement with electrophile capture