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Updated: Aug 24, 2026
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Constructing Cyclic Peptides Using an On-Tether Sulfonium Center
Published on: September 28, 2022
[Three cyclic dipeptides from the root of Psammosilene tunicoides]
Zhong-tao Ding1, Zhi-juan Bao, Xue-qiong Yang
1Department of Chemistry, Yunnan University, Kunming 650091, Yunnan, China. ztdng@ynu.edu.cn
Abstract
Objective:
[corrected] To study the cyclic peptides from Psammosilene tunicoides.
Method:
The constituents were separated and purified with chromatographic methods, identified by NMR, MS, UV and IR.
Result:
Three cyclic dipeptides: cyclo(-Pro-Val-) (1), cyclo(-Pro-Ala-) (2) and cyclo(-Pro-Pro-) (3), were isolated and identified.
Conclusion:
Compound 1 and 2 are new natural products, compound 3 was isolated for the first time from Psammosilene tunicoides.
