Tetrahedron Letters p. 5659 - 5662 (1989)
Update date:2022-08-06
Topics:
Bonjoch, Josep
Casamitjana, Nuria
Gracia, Jordi
Bosch, Joan
An efficient, stereocontrolled synthesis of the tetracyclic bases 1 and 2 by cyclization of the regioisomeric cyanopiperidines 4 and 5, prepared from the common cis-3-ethyl-4-(2-indolylmethyl)piperidine intermediate 3, is reported.
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