A Chiron Approach to the Total Synthesis of (−)-Juglomycin A, (+)-Kalafungin, (+)-Frenolicin B, and (+)-Deoxyfrenolicin
作者:Rodney A. Fernandes、Vijay P. Chavan、Sandip V. Mulay、Amarender Manchoju
DOI:10.1021/jo3019939
日期:2012.11.16
A general, efficient, and common strategy for the synthesis of (−)-juglomycin A, (+)-kalafungin, (+)-frenolicin B, and (+)-deoxyfrenolicin is reported here. The strategy involves the synthesis of a key building block alkyne from a cheap chiral pool material, d-glucono-δ-lactone, Dötzbenzannulation, oxa-Pictet-Spengler reaction, and H2SO4-mediated epimerization.
此处报道了合成(-)-珠红霉素A,(+)-卡拉芬净,(+)-肾上腺素B和(+)-脱氧肾上腺素的通用,有效且通用的策略。该策略涉及由廉价的手性池材料,d-葡萄糖酸-δ-内酯,Dötz苯环化,oxa-Pictet-Spengler反应和H 2 SO 4介导的差向异构化合成关键的结构单元炔烃。
A Direct Asymmetric Synthesis of Juglomycin A
作者:Hiroshi Maeda、George A. Kraus
DOI:10.1021/jo952077p
日期:1996.1.1
Juglomycin A has been synthesized in four steps from 5-methoxy-1-naphthol.
A Dötz benzannulation route to the enantioselective synthesis of (−)- and (+)-juglomycin A
作者:Rodney A. Fernandes、Vijay P. Chavan
DOI:10.1016/j.tetasy.2011.07.018
日期:2011.6
Two synthetic routes based on a Dotz benzannulation toward the enantioselective synthesis of naphthoquinone antibiotics (-)- and (+)-juglomycin A are described. The stereoinducing step is based on asymmetric dihydroxylation. The syntheses are completed in seven to eight steps from Fischer carbene 12. (C) 2011 Elsevier Ltd. All rights reserved.