An unusual epimerization of the α-OH-1 group of the norditerpenoid alkaloid delphisine
作者:S. William Pelletier、Haridutt K. Desai、Qingping Jiang、Samir A. Ross
DOI:10.1016/0031-9422(90)85293-o
日期:1990.1
Abstract Solvolysis of delphisine in refluxing methanol gives 8-deacetyl-8- O -methyl-1- epi -delphisine. Similarly, hydrolysis of delphisine in boiling water affords 14- O -acetyl-1- epi -neoline and solvolysis of 8- O -acetylneoline in methanol gives 8- O -methyl-1- epi -neoline. The structures of the products have been proved by spectral data and comparison with authentic samples. For epimerization