Two new germacrane sesquiterpenes： 3,8,14-trihydroxy- 1 （10）E,4Z, 11 （13）-germacra- trien-12, 6-olide, 8-（2-methyl-4-hydroxyl-2E-butenoyl）, 3,14-diacetoxy （eupalinolide A, 1）, and 3,8,14-trihydroxy-1（10） E,...Two new germacrane sesquiterpenes： 3,8,14-trihydroxy- 1 （10）E,4Z, 11 （13）-germacra- trien-12, 6-olide, 8-（2-methyl-4-hydroxyl-2E-butenoyl）, 3,14-diacetoxy （eupalinolide A, 1）, and 3,8,14-trihydroxy-1（10） E, 4E, 11（13）-germacratrien-12,6-olide, 8-2-methyl-4-hydroxyl-2E- butenoyl）, 3,14-diacetoxy （eupalinolide B, 2） were isolated from Eupatorium lindleyanum. Their structures were elucidated by means of ^1H and ^13C NMR spectroscopic analysis, including 2D NMR technique.展开更多
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 anal...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.展开更多
基金This work was supported by the Natural Science Foundation of Jiangsu Science and Technology Department(No.BK2001185),which are gratefully acknowledged.
文摘Two new germacrane sesquiterpenes： 3,8,14-trihydroxy- 1 （10）E,4Z, 11 （13）-germacra- trien-12, 6-olide, 8-（2-methyl-4-hydroxyl-2E-butenoyl）, 3,14-diacetoxy （eupalinolide A, 1）, and 3,8,14-trihydroxy-1（10） E, 4E, 11（13）-germacratrien-12,6-olide, 8-2-methyl-4-hydroxyl-2E- butenoyl）, 3,14-diacetoxy （eupalinolide B, 2） were isolated from Eupatorium lindleyanum. Their structures were elucidated by means of ^1H and ^13C NMR spectroscopic analysis, including 2D NMR technique.
文摘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.
