A Practical Total Synthesis of (+)-Spirolaxine Methyl Ether
作者:J. S. Yadav、M. Sreenivas、A. Srinivas Reddy、B. V. Subba Reddy
DOI:10.1021/jo1016647
日期:2010.12.3
An efficient and practical total synthesis of (+)-spirolaxine methylether is described. The phthalide-aldehyde 3 has been prepared via the Diels−Alder reaction between 1,4-unconjugated diene 5 and a long-chain acetylenic dienophile 6. The carbon framework of spiroketal sulfone 4 has been constructed from monobenzyl protected 1,5-pentanediol and the stereochemistry in both the phthalide portion and