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Yingxiong Ma on Muck Rack

Yingxiong Ma

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Herpetosin A, a nor-cucurbitane triterpenoid with a 5/6/6/5 ring system from Herpetospermum pedunculosum

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By Qianyu Chen, Zhaoyue Dong, Bing Xu, Yingxiong Ma
| Taylor & Francis Online
Two previously undescribed triterpenoids, herpetosin A (1) and herpetosin B (2), together with two known compounds, cucurbitacin B (3) and dihydrocucurbitacin E (4), were isolated from the seeds of Herpetospermum pedunculosum. Their structures were elucidated by analysis of the NMR, HR-ESI-MS, X-ray data and quantum chemical calculation. Compound 1 featured an unprecedented nor-cucurbitane triterpenoid skeleton with a 5/6/6/5 ring system.
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