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Planta Med 2001; 67(5): 423-427
DOI: 10.1055/s-2001-15820
Original Paper
Pharmacology
© Georg Thieme Verlag Stuttgart · New York

A New Tetrahydroprotoberberine N-Oxide Alkaloid and Anti-Platelet Aggregation Constituents of Corydalis tashiroi

Jih-Jung Chen1 , Ya-Ling Chang2 , Che-Ming Teng2 , Wei-Yu Lin3 , Yu-Chang Chen3 , Ih-Sheng Chen3,*
  • 1 Department of Pharmacy, Tajen Institute of Technology, Pingtung, Taiwan, Republic of China
  • 2 Pharmacological Institute, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China
  • 3 Graduate Institute of Pharmaceutical Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan, Republic of China
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Publication History

July 28, 2000

December 2, 2000

Publication Date:
31 December 2001 (online)

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Abstract

A new tetrahydroprotoberberine N-oxide alkaloid, (-)-cis-isocorypalmine N-oxide (1), together with two known compounds, 6-methoxydihydrosanguinarine (2) and norjuziphine (3), were isolated in continuing studies of the entire Formosan Corydalis tashiroi plant. The structures of these three compounds were determined through spectral analyses. In addition, compounds 1, 2, 3 and the seven alkaloids previously reported: (-)-cis-corydalmine N-oxide, (-)-trans-corydalmine N-oxide, (-)-trans-isocorypalmine N-oxide, scoulerine, protopine, oxysanguinarine and corydalmine, were found to possess anti-platelet aggregation activity.

Key words

Corydalis tashiroi - Fumariaceae - alkaloids - berberine - tetrahydroprotoberberine N-oxide - (-)-cis-isocorypalmine N-oxide - anti-platelet aggregation activity