Journal of the Chemical Society. Perkin transactions I p. 457 - 461 (1980)
Update date:2022-08-04
Topics:
Takano, Seiichi
Hatakeyama, Susumi
Ogasawara, Kunio
The half ester (8) prepared from cleavage of 2-(1,3-dithian-2-yl)-4-ethoxycarbonyl-4-ethylcyclohexanone (7) has been converted into (+/-)-eburnamine (20), (+/-)-isoeburnamine (21), and (+/-)-eburnamenine (22) by a stereospecific reaction sequence proceeding via the dithian intermediate (16).However an attempted conversion of (16) into (+/-)-vincamine (6) was unsuccessful.
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