Journal
CHINESE CHEMICAL LETTERS
Volume 23, Issue 2, Pages 193-196Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2011.11.014
Keywords
Steroidal sapogenin; Welsh onion
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Funding
- National Natural Science Foundation of China [30873154]
- National Specific Project of New Drugs Innovation [2009ZX09103-328]
- Scientific Foundation of Shanghai China [08DZ1971600]
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Two new steroidal sapogenins (1, 2) along with five known steroidal sapogenins were isolated from the acid hydrolysis product of the whole glycoside mixture of Welsh onion (Allium fistulosum L.) seeds. Based on comprehensive spectroscopic analyses, including 2D NMR spectroscopy and mass spectrometry, their structures were elucidated as (25R)-19-norspirosta-1,3,5 (10)-triene4-methyl-2-ol (1), (25R)-spirost-1,4-diene-3-one-2,6-diol (2), (25R)-spirost-1,4-diene-3-one-2-ol (3), (25R)-spirost-4-ene-3-one-2-ol (4), yuccagenin (5), gitogenin (6) and tigogenin (7). (C) 2011 Published by Elsevier B.V. on behalf of Chinese Chemical Society.
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