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Communication | Special issue | Vol 42, No. 1, 1996, pp.87-92
Published online, 1st January, 1970
DOI: 10.3987/COM-95-S27
Stereochemical Assignment of Pseudoindoxyl Alkaloids

Hiromitsu Takayama, Mika Kurihara, Sanan Subhadhirasakul, Mariko Kitajima, Norio Aimi, and Shin-ichiro Sakai

*Faculty of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan


The stereochemistries of the C2 and C3 positions in three pseudoindoxyl alkaloids, i.e., mitragynine pseudoindoxyl, yohimbine pseudoindoxyl, and β-yohimbine pseudoindoxyl, were elucidated by spectroscopic analyses. The CD spectra of these compounds and that of fluorocarpamine showed the antipodal-like curves in the long wavelength region.