Stereocontrolled synthesis of the CD subunit of the marine macrolide altohyrtin A
摘要:
A synthesis of the C17-C28 segment of altohyrtin A is reported. The synthesis uses a coupling step between two chiral subunits, both of which were synthesized from L-malic acid. The remaining stereocenters were obtained through a combination of stereoselective reactions and thermodynamic equilibration. (C) 1998 Elsevier Science Ltd. All rights reserved.
Stereocontrolled synthesis of the CD subunit of the marine macrolide altohyrtin A
摘要:
A synthesis of the C17-C28 segment of altohyrtin A is reported. The synthesis uses a coupling step between two chiral subunits, both of which were synthesized from L-malic acid. The remaining stereocenters were obtained through a combination of stereoselective reactions and thermodynamic equilibration. (C) 1998 Elsevier Science Ltd. All rights reserved.
Total Synthesis of RNA-Polymerase Inhibitor Ripostatin B and 15-Deoxyripostatin A
作者:Wufeng Tang、Evgeny V. Prusov
DOI:10.1002/anie.201108749
日期:2012.4.2
me skipped: A highly convergent totalsynthesis of ripostatinB, an inhibitor of the bacterialRNApolymerase, is described. The key steps to construct and avoid isomerization of the skipped triene are a double Stille cross‐coupling reaction and a ring‐closing metathesis. Furthermore, 15‐deoxyripostatin A, a stable and conformationally locked analogue of ripostatin A (see scheme, 15‐OH group red),