Four new alkaloids from Polyalthia nemoralis (Annonaceae).
Four new alkaloids, polynemoralines A (1), B (2), C (3), and D (4), were isolated from the branches and leaves of Polyalthia nemoralis A DC. The structures of 1-4 were elucidated mainly on the basis of spectroscopic methods. The structure of 4 was confirmed by X-ray diffraction analysis.
Lu
Zi-Ming
ZM
The Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
Zhang
Qing-Jian
QJ
Chen
Ruo-Yun
RY
Yu
De-Quan
DQ
D000470:Alkaloids / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D031044:Polyalthia / Q000737:chemistry*
D000470:Alkaloids