The structures and stereochemistry of majdine and isomaydine.
نویسندگان
چکیده
On direct comparison by TLC and IR we established that the alkaloids A-5 and A-4, first isolated from Vinca herbacea W. K . 1 are identical to the oxindole alkaloid majdine (I), later isolated from Vinca major L. 2' 3 and with its isomer isomajdine (II), prepared by heating of (I) in acetic anhydride 2. Based upon some spectroscopic evidence it was claimed2, that majdine was a diastereomer of carapanaubine (III) 4, while isomajdine differed by the configuration at C-3.
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ورودعنوان ژورنال:
- Zeitschrift fur Naturforschung. Teil B, Chemie, Biochemie, Biophysik, Biologie und verwandte Gebiete
دوره 23 2 شماره
صفحات -
تاریخ انتشار 1968