Stereoselective Synthesis of 1-Tuberculosinyl Adenosine; a Virulence Factor of <i>Mycobacterium tuberculosis</i>
作者:Jeffrey Buter、Dorus Heijnen、Ieng Chim Wan、F. Matthias Bickelhaupt、David C. Young、Edwin Otten、D. Branch Moody、Adriaan J. Minnaard
DOI:10.1021/acs.joc.6b01332
日期:2016.8.5
challenging. Here, a multigram-scale stereoselectivesynthesis of 1-TbAd and N6-TbAd is described. As a key-step, a chiral auxiliary-mediated Diels–Alder cycloaddition was developed, introducing the three stereocenters with a high exo endo ratio (10:1) and excellent enantioselectivity (>98% ee). This constitutes the first entry into the stereoselectivesynthesis of diterpenes with the halimane skeleton
Chemical synthesis of 13C labeled anti-HIV nucleosides as mass-internal standards
作者:Yoshio Saito、Thomas A Zevaco、Luigi A Agrofoglio
DOI:10.1016/s0040-4020(02)01246-2
日期:2002.11
Synthesis of [13C5]-labeled anti-HIV nucleosides, e.g. d4T, ddI, ddA, is described. The methodology used has been optimized due to the very high cost of the starting compound. The key step of this approach was the stereoselective dehomologation of 1,2:5,6-di-O-isopropylidene-3-oxo-α-d-glucofuranose (2) with periodic acid and sodium borohydride, which gave optically pure ribose derivative as the exclusive