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Studies on the Chemical Constituents of Bretschneidera sinensis Hemsl. EndEmic in China |
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| Authors: | Ma Zhong-wu and He Guan-fu |
| Abstract: | Four compounds were for the first time isolated from trunk of Bretschneidera sinensis Hemsl. grown in Yunnan. They were identified as 3-epi-betulinic acid(l), 3,5,7-tri-hydroxy-flavanonol (pinobanksin) (2), daucosterol (3) and β-sitosterol (4), respectively by chemical and spectral (IR, NMR, and MS) analyses. 1 and 2 were the main components. |
| Keywords: | Bretschneidera sinensis Hemsl. 3-epi-betulinic acid 3 5 7-trihydroxy-flavanonol (pinobanksin) Daucosterol β-sitosterol |
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