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Concise Synthesis and Antimicrobial Evaluation of the Guanidinium Alkaloid Batzelladine D

revised on 04.10.2019, 12:35 and posted on 04.10.2019, 22:07 by You-Chen Lin, Aubert Ribaucourt, Yasamin Moazami, Joshua Pierce
A concise synthesis of the tricyclic guanidinium alkaloid batzelladine D has been accomplished in a sequence of 8 steps from readily available building blocks. Highlights of the synthesis include gram-scale preparation of a late stage intermediate, pinpoint stereocontrol around the tricyclic skeleton and a modular strategy that enables analog generation. A key bicyclic b-lactam intermediate serves to not only control stereochemistry, but also serves as a pre-activated coupling partner to install the ester sidechain. The stereo-controlled synthesis allowed for the investigation of the antimicrobial activity of batzelladine D, demonstrating promising activity that is more potent for non-natural stereoisomers.


Synthesis and Chemical Biology of Bioactive Guanidine Alkaloids

National Institute of General Medical Sciences

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NC State University


United States

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Declaration of Conflict of Interest

The authors declare not conflict of interest.