Alternative and Expedient Asymmetric Syntheses of l-(+)-Noviose
摘要:
L-(+)-Noviose, the sugar component of the antibiotic novobiocin, was synthesized from readily available non-carbohydrate starting materials relying on stoichiometric and asymmetric processes by two independent methods, comprising six and nine steps, in 27 and 20% overall yields, respectively.
addition to an in-situ-generated lactaldehyde. The resulting homoallylic alcohol was further transformed into a set of ring-closing metathesis (RCM) precursors. These compounds were converted into noviose in few steps using RCM and RCM-allylic-oxidation sequences.
Alternative and Expedient Asymmetric Syntheses of <scp>l</scp>-(+)-Noviose
作者:Stephen Hanessian、Luciana Auzzas
DOI:10.1021/ol702655c
日期:2008.1.1
L-(+)-Noviose, the sugar component of the antibiotic novobiocin, was synthesized from readily available non-carbohydrate starting materials relying on stoichiometric and asymmetric processes by two independent methods, comprising six and nine steps, in 27 and 20% overall yields, respectively.