Volume 42, Issue 19 pp. 2293-2298
Concise Report

Chemoenzymatic Synthesis of N,N,N-Trimethyl-D-Glucosamine Chitotriomycin and Its Analogues

Jianghua Li

Jianghua Li

Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266003 China

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Yan Zhang

Yan Zhang

Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266003 China

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Zhifei Hu

Corresponding Author

Zhifei Hu

Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266003 China

Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao, Shandong, 266237 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Jinfeng Ye

Jinfeng Ye

Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266003 China

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Hongzhi Cao

Corresponding Author

Hongzhi Cao

Key Laboratory of Marine Drugs of Ministry of Education, Shandong Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong, 266003 China

Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao, Shandong, 266237 China

E-mail: [email protected]; [email protected]Search for more papers by this author
First published: 22 May 2024

Comprehensive Summary

N,N,N-Trimethyl-D-glucosamine (TMG)-chitotriomycin, a naturally occurring chitin related oligosaccharide, is a specific β-N-acetylhexosaminidases (HexNAcases) inhibitor for insects and fungi. Although TMG-chitoriomycin holds great promise as a novel class insecticide and fungicide, the limited accessibility of TMG-chitotriomycin prevents its further biological evaluation. We report herein a simple and eco-friendly chemoenzymatic approach for the efficient synthesis of TMG-chitotriomycin and its analogues. In this strategy, the readily available chitosan was enzymatically hydrolyzed and chemically N-acetylated to afford the chitooligosaccharides ranging from disaccharide to hexasaccharide. These chitooligosaccharides were selectively deacetylated by two different chitin deacetylases followed by chemical N-trimethylation to obtain the desired TMG-chitotriomycin and a total of 13 TMG-chitotriomycin analogues in the longest linear sequence of 4 steps in over 12% total yields.

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