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A new lupane glycoside isolated from Dendrobium officinale withα-glucosidase inhibitory activity
被引:0
作者:
Yen, Pham Hai
[1
]
Hang, Dan Thi Thuy
[1
]
Tra, Dinh Thu
[1
]
Hoang, Nguyen Huy
[1
]
Bang, Ngo Anh
[1
]
Dung, Nguyen Viet
[1
]
Huong, Phan Thi Thanh
[1
]
Yen, Duong Thi Hai
[1
]
Dung, Duong Thi
[1
]
Trang, Do Thi
[1
]
Tai, Bui Huu
[1
]
Kiem, Phan Van
[1
]
机构:
[1] Vietnam Acad Sci & Technol VAST, Inst Marine Biochem, Hanoi, Vietnam
关键词:
Dendrobium officinale;
dendrolupanoside;
lupane triterpenoid;
Orchidaceae;
alpha-glucosidase inhibitory activity;
TRITERPENOID SAPONINS;
D O I:
10.1002/vjch.70020
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A new lupane triterpene glycoside (1) and four known compounds (2-5) were isolated from the aerial parts of Dendrobium officinale. Their chemical structures were determined to be 3-O-alpha-L-arabinopyranosylbetulinic acid 28-O-beta-D- glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester (1), 3-O-alpha-L-arabinopyranosylbetulinic acid 28-O-alpha-L-rhamnopyranosyl-(1 -> 4)-beta-D-glucopyranosyl-(1 -> 6)-beta- D-glucopyranosyl ester (2), 3-O-beta-D-glucopyranosylbetulinic acid 28-O-alpha-L-rhamnopyranosyl-(1 -> 4)-beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester (3), 6 alpha-hydroxylup-20(29)-en-3-on 28-oic acid (4), and lupeol (5) by analyzing the HR-ESI-MS, 1D and 2D NMR spectra including COSY and NOESY. Compounds 1, 2 and 4 showed weak alpha-glucosidase inhibitory activity with IC50 values ranging from 87.5 to 98.2 mu M.
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页数:7
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