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Note | Regular issue | Vol 78, No. 6, 2009, pp.1557-1562
Published online, 12th March, 2009
DOI: 10.3987/COM-08-11634
Scyphiphorins C and D, Two New Iridoid Glycosides from the Chinese Mangrove Scyphiphora hydrophyllacea

Shu-Hong Tao, Shu-Hua Qi, Si Zhang,* Zhi-Hui Xiao, and Qing-Xin Li

*Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China

Abstract

Two new iridoid glycosides with a lignan substituent, named scyphiphorins C (1) and D (2), were isolated from the stem bark of a Chinese mangrove Scyphiphora hydrophyllacea Gaertn. f., together with five known iridoid glycosides, 10-O-acetylgeniposidic acid (3), 7-deoxy-8-epi-loganic acid (4), mussaenoside (5), 7-deoxygardoside (6), and 10-deoxygeniposidic acid (7). The structures of compounds 1 and 2 were elucidated on the basis of spectroscopic data, especially 2D NMR techniques.