1.
J Asian Nat Prod Res
; 14(9): 873-6, 2012.
Article
in English
| MEDLINE
| ID: mdl-22924555
ABSTRACT
Epiberberine, a natural bioactive protoberberine alkaloid, was totally synthesized in short, convenient and low-cost, four-step reactions including cyclization, condensation, reduction, and ring-closing, with an overall yield of 26.1%.
Subject(s)
Berberine Alkaloids/chemical synthesis , Berberine/analogs & derivatives , Berberine/chemical synthesis , Berberine/chemistry , Berberine Alkaloids/chemistry , Catalysis , Cyclization , Molecular Structure
2.
J Asian Nat Prod Res
; 10(7-8): 663-71, 2008.
Article
in English
| MEDLINE
| ID: mdl-18636379
ABSTRACT
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.
Subject(s)
Alkaloids/chemistry , Polyalthia/chemistry , Models, Molecular , Molecular Structure
3.
Yao Xue Xue Bao
; 40(10): 876-81, 2005 Oct.
Article
in Chinese
| MEDLINE
| ID: mdl-16408801
