Structures of kokzeylanol and kokzeylanonol two new natural tri- and tetra- oxygenated D:A-friedo-oleananes
作者:A.A.Leslie Gunatilaka、N.P.Dhammika Nanayakkara、M. Uvais、S. Sultanbawa
DOI:10.1016/s0040-4039(01)90339-9
日期:1981.1
kokzeylanonol obtained from have been shown to be 6β,27-dihydroxy-D:A-friedo-olean-3-one () and 6β,27-dihydroxy-D:A-friedo-oleana-3,21-dione (), respectively by the deoxygenatlon of their 27-acetoxy derivatives using Lithium-ethylene diamine reduction coupled with spectroscopic and irradiation methods. Kokzeylanonol represents the first tetraoxygenated D:A-friedo-oleanane isolated from a natural source.
从中获得的角鲨烷醇和角鲨烷醇显示为6β,27-二羟基-D:A-friedo-olean-3-one()和6β,27-二羟基-D:A-friedo-oleana-3,21-dione(),分别使用锂乙二胺还原,光谱法和辐照法对27-乙酰氧基衍生物进行脱氧。Kokzeylanonol代表从天然来源中分离出的第一个四氧化D:A-弗里多-油烷。