Diterpenoids from the rhizomes of Alpinia calcarata.
Four new labdane-type diterpenoids, calcaratarins A-D (1-4), along with six known labdane-type diterpenoids, a known elemane-type sesquiterpenoid, and a known coumarin, were isolated from the rhizomes of Alpinia calcarata. The structures of 1-4 were elucidated on the basis of spectroscopic studies.
Faculty of Pharmacy, Meijo University, Tempaku, Nagoya 4688503, Japan, and China Pharmaceutical University, Nanjing 210009, People's Republic of China.
L Y
LY
Kong
M J
MJ
Qin
M
M
Niwa
D015394:Molecular Structure; D013057:Spectrum Analysis; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D019862:Zingiberales / Q000737:chemistry*
D014315:Triterpenes