A new stereoisomer of stemmadenine alkaloid from Tabernaemontana heyneana

Magnetic Resonance in Chemistry
2002.0

Abstract

<jats:title>Abstract</jats:title><jats:p>A new alkaloid, 15‐β‐stemmadenine, was isolated from the fruits of <jats:italic>Tabernaemontana heyneana</jats:italic> Wall. from the ethanolic extract. The complete <jats:sup>1</jats:sup>H and <jats:sup>13</jats:sup>C NMR assignments of the compound were carried out using COSY, HMQC and HMBC. Stereochemistry at C‐15 and C‐16 was established using ROESY and temperature‐dependent <jats:sup>1</jats:sup>H NMR studies. Copyright © 2002 John Wiley &amp; Sons, Ltd.

DOI： 10.1002/MRC.1039

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