Ym. Chi et al., MONOTERPENE ALKALOIDS FROM INCARVILLEA-SINENSIS .6. ABSOLUTE STEREOCHEMISTRY OF INCARVILLINE AND STRUCTURE OF A NEW ALKALOID, HYDROXYINCARVILLINE, Chemical and Pharmaceutical Bulletin, 45(3), 1997, pp. 495-498
The absolute configuration of incarvilline (1), an important core comp
ound of a number of alkaloids isolated from Incarvillea sinensis LAM.,
has been determined by the application of Mosher's method and X-ray c
rystallographic analysis of incarvilline methiodide (1a). Furthermore,
the structure of hydroxyincarvilline (2) was also determined by spect
roscopic means.