A New Azafluorenone Alkaloid from Alphonsea Monogyma

A new azafluorenone (onychine) alkaloid, 6,7-dimethoxy-5-hydroxy-onychine, was isolated from the stem and branch of Alphonsea monogyma. Its structure was established mainly on the basis of spectral analysis.

A New Oxoaporphine Alkaloid from Alphonsea Mollis Dun.

A new oxoaporphine alkaloid, 1,2-methylene-dioxy-8-hydroxy-5- oxoaporphine, was isolated from the stem barks of Alphonsea mollis . Its structure was established on the basis of spectral analysis and chemical correlation.

A New Azafluorenone Alkaloid from Alphonsea monogrma

A new azafluorenone (onychine) alkaloid. 6.7-dimethoxy-5-hydroxy onychine N-oxide. was isolated from the stem and branch of Alphonsea monogyma. Its structure was established on the basis of spectral and chemical analysis.

藤春中生物碱的研究

经工业酒精提取和硅胶柱层析,从藤春叶中分得一个新的Azafluorenone(onychine) 型生物碱6 ,7dimethoxy5hydroxy onychine, 并得到四个已知的生物碱liriodenine ,cyathocaline,isooncodine ,darienine 。

石密的化学成分研究

从番荔枝科植物石密的茎皮中分离和鉴定了一个氧化阿朴啡类生物碱——石密碱(1)和两个木脂素类化合物:(2R,3R)-2,3-二氢-2-(4-羟基-3-甲氧基苯基)-3-甲基-5-(E)-丙基苯并呋喃(2)和conocarpan(3)。其中石密碱为新化合物,化合物(2)和(3)为从番荔枝科植物中首次分得。