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Paper | Regular issue | Vol 57, No. 3, 2002, pp.477-482
Published online, 1st January, 1970
DOI: 10.3987/COM-01-9419
New Cyclic Peptides from Citrus aurantium

Teruki Matsumoto, Noriko Tashiro, Koichi Nishimura, and Koichi Takeya*

*School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan


Two new cyclic peptides were isolated from the fruit peels of Citrus aurantium. Their structures were elucidated as cyclo (-Gly-Leu-Val-Leu-Pro-Ser-) and cyclo (-Gly-Gly-Leu-Leu-Leu-Pro-Pro-Phe-) by intensive 2D NMR analysis and chemical evidence.