Asymmetric Total Synthesis and Structural Elucidation of NFAT-68
作者:Lin Wang、Yumeng Xi、Shouliang Yang、Rong Zhu、Yufan Liang、Jiahua Chen、Zhen Yang
DOI:10.1021/ol102574d
日期:2011.1.7
Total synthesis of NFAT-68 (7) has been achieved and its relative stereochemistry has been determined. A key step thereof is the utilization of the chelation-controlled vinylogous Mukaiyama aldol reaction (VMAR) to stereoselectively synthesize the sytt-aldol product 8. This developed chemistry is anticipated to have wider application in total syntheses of many other natural products.
Synthesis of the C1−C13 Tetraenoate Subunit of the Chivosazoles
作者:Ian Paterson、S. B. Jennifer Kan、Lisa J. Gibson
DOI:10.1021/ol101630p
日期:2010.8.20
Using a combination of asymmetric vinylogous Mukaiyama aldol and Stifle cross-coupling reactions, an advanced polyene fragment of the chivosazoles was prepared in a highly stereocontrolled manner. This key C1-C13 pentaene subunit, featuring the conjugated (2E,4Z,6E,8Z)-tetraenoate motif and anti-configured C10 and C11 stereocenters of the chivosazoles, terminates in a (Z)-vinyl bromide for the planned cross-coupling to a northern hemisphere fragment.