Stereoselective Formal Total Synthesis of (+)-Methynolide
摘要:
A highly stereoselective and convergent formal total synthesis of (+)-methynolide is described. The salient features of this synthesis have been the construction of the C1-C7 and C8-C11fragments via a desymmetrization approach, Sharpless asymmetric epoxidation of an allyl alcohol, respectively, and linkage of both the fragments by Nozaki-Hiyama-Kishi reaction.
Total Synthesis of 10-Deoxymethynolide and Narbonolide
作者:Richeng Xuan、Hong-Se Oh、Younghoon Lee、Han-Young Kang
DOI:10.1021/jo702384d
日期:2008.2.1
flexible and convenient approach was developed for the synthesis of 10-deoxymethynolide (1) and narbonolide (2), which are aglycones of the methymycin and the pikromycin families of macrolide antibiotics. These lactones are produced by pikromycin polyketide synthase from Streptomyces venezuelae. Polyketide lactones, 10-deoxymethynolide and narbonolide, which contain 12- and 14-membered rings, respectively