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Updated: Mar 11, 2026

Synthesis and Structure Determination of µ-Conotoxin PIIIA Isomers with Different Disulfide Connectivities
Published on: October 2, 2018
Total synthesis and confirmation of the revised structures of jiangrines A, C and D
1Key Laboratory of Green Chemistry & Technology of the Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China. chembliu@scu.edu.cn.
Abstract:
Our previous total synthesis of the proposed structures of jiangrines C and D shows that the characteristic data of synthetic samples did not match those of the natural ones, prompting us to revise their structures. Accordingly, we now accomplished the total synthesis of jiangrines A, C and D, which confirms our deduction that their molecular skeletons should compose of 2,3-disubstituted pyrrole instead of 2,5-disubstituted pyrrole. Our current synthesis features a silver-catalyzed [3 + 2] cycloaddition between a terminal alkyne and isocyanide, and was completed concisely in only seven linear steps.
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