[Studies on triterpenes chemical constituents in rhizome of Alisma gramineum].
OBJECTIVE
To investigate the triterpenoids chemical constituents in rhizome of Alisma gramineum.


METHODS
Silicon gel chromatography and HPLC techniques were employed for isolation and purification of the constituents, and the structures were elucidated by various spectral analyses such as NMR, MS and IR.


RESULTS
5 protostane-type tetracyclic triterpenoids were isolated and identified as 16,23-oxidoalisol B(1), 11-deoxyalisol C(2), alisol F(3), 16beta-methoxyalisol B acetate (4), 16beta-hydroxyalisol B acetate (5).


CONCLUSIONS
All of these compounds were found from A. gramineum for the first time.
Wo
Lian-qun
LQ
Zhejiang pharmaceatical College, Ningbo 315100, China.
Luo
Guang-ming
GM
Wang
Bao-xiu
BX
Zhu
Wei-feng
WF
D034902:Alisma / Q000737:chemistry*; D002778:Cholestanones / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D027343:Rhizome / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
C516684:16,23-oxidoalisol B; D002778:Cholestanones; D014315:Triterpenes; C516685:alisol F