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Updated: Jun 23, 2026

The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
Published on: August 25, 2016
[Study on Diels-Alder type adducts from stem barks of Morus yunanensis]
Xiqiang Cui1, Hui Chen, Ruoyun Chen
1Key Laboratory of Bioactive substance and Resources Utilization of Chinese Herbal Medicine, Institute of Materia Medica, Peking Union College and Chinese Academy of Medical Science, Beijing 100050, China.
Objective:
To isolate and identify the Diels-Alder type adducts from stem barks of Morus yunanensis.
Method:
The compounds were isolated and purified by silicagel, Sephadex LH-20 and RP-18 colum chromatography. Their chemical structures were elucidated on the basis ofphysicochemical properties and spectral data.
Result:
Nine compounds were isolated and identified as: kuwanon G (1), sanggenol M (2), mulberrofuran J (3), guangsangon B (4), resveratrol (5), kuwanon X (6), kuwanon P (7), mulberrofuran O (8), mulberrofuran Q (9).
Conclusion:
All the compounds are isolated from the plant for the first time, and compounds 4, 5 have anti-inflammation activities with inhibitory ratios of 57.3%, 50.5% respectively at a concentration of 10 microg mL(-1).
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