Chinese Journal of Magnetic Resonance ›› 1991, Vol. 8 ›› Issue (2): 133-138.

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NMR ANALYSIS OF A DOUBLE HINDERED ROTATION ISOMER

Chiu Minghua, Nie Ruilin, Wang Dezhu, Zhou Jun   

  1. Kunming Institute of Botany, Acadcmia Sinica, Kunming
  • Received:1989-10-11 Revised:1990-11-26 Published:1991-06-05 Online:2018-01-20

Abstract: This note describes the hindered rotation isomerism of steroidal alkaloid epi-pachysamine A (la, 1b). By DEPT technique, 1H, 13C HETCOR, 1H, 1H NOESY; the 13C NMR data of cpi-pachysamine A as a double hindered rotation isomer were assigned as Table 1.

Key words: Hindered rotation isomer, Epi-pachysamine A, Magnetic Resonance