Journal of Dali University ›› 2023, Vol. 8 ›› Issue (8): 15-20.

Previous Articles     Next Articles

Synthesis of L-5-Hydroxytryptophan Derivatives

Qin Zikang Guo Haihui Shan Fang Wu Lei Wang Fusheng*   

  1. College of Pharmacy Dali University Dali Yunnan 671000 China

  • Received:2023-01-12 Revised:2023-02-11 Online:2023-08-15 Published:2023-07-11

Abstract: Objective To broaden the categories of tryptophan derivatives for the synthesis of monothylindole alkaloids. Methods Using commercially available L-5-hydroxytryptophan as raw material L-5-hydroxytryptophan derivatives were synthesized through carboxyl esterification amino Boc protection ester ammonolysis acetylation or methylation of hydroxyl and deprotection of Boc. Results Secen L-5-hydroxytryptophan derivatives were efficiently synthesized namely L-5-hydroxytryptophan formamide1), L-5-hydroxytryptophan acetamide2), L-5-hydroxytryptophan propionamide3), L-5-acetoxytryptophan methyl ester4), L-5-acetoxytryptophan formamide5), L-5-methoxytryptophan methyl ester6 and L-5-methoxytryptophan formamide7), respectively. Compounds 4 5 and 7 were new derivatives and the structures of all derivatives were confirmed by spectroscopic methods. Conclusion The synthesis method has the characteristics of simple operation mild reaction condition and high total yield which is suitable for industrial production.

Key words: font-family:Times New Roman, ">ester ammonolysisfont-family:Times New Roman, ">;font-family:Times New Roman, "> acetylation reactionfont-family:Times New Roman, ">;font-family:Times New Roman, "> methylation reactionfont-family:Times New Roman, ">;font-family:Times New Roman, "> L-5-hydroxytryptophan derivativefont-family:Times New Roman, ">;font-family:Times New Roman, "> synthesis

CLC Number: