Study on The Structure-Sweetness Relationship of Dihydroflavonol Glycoside
| Project/Area Number |
02670955
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Chemical pharmacy
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| Research Institution | Hiroshima University |
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Principal Investigator |
KASAI Ryoji Hiroshima University School of Medicine Associate Professor, 医学部, 助教授 (10034018)
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| Project Period (FY) |
1990 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1990: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | Leaves of Engelhardtia crysolepis / Dihydroflavonol glycoside / Sweet glycoside / Taxifolin glycoside / Neoastilbin / タキシフォリン配糖体 / 甘味と構造相関 |
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| Research Abstract |
The leaves of Engelhardtia crysolepis Hance (Juglandaceae) have been used as a sweet tea called huang-qi in China. Present author reported on the isolation of neoastillbin (3-O-rhamnosyl-(2S, 3S)-taxifolin, 1) as a sweet principle of the leaves together with three non-sweet isomers of neoastilbin, astilbin, neoisoastillbin and isoastilbin. In further investigation of the sweet principle of the leaves, an additional new sweet dihydroflavonol glycoside [glucosyl-rhamnosyl-(2R, 3R)-taxifolin, 2] was isolated. This report deals with the structural elucidation of 2, and isomerization of astilbin and 2. Furthermore, the isolation and identification of the flavonoid compound of four other Engelhardtia species, which grows in Yunan, China, were reported.
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Report
(3 results)
Research Products
(4 results)
