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|Title:||Synthesis of Angularly Fused (Homo)triquinane-Type Hydantoins as Precursors of Bicyclic Prolines|
|Authors:||Šmit, Biljana |
|Abstract:||© Georg Thieme Verlag Stuttgart · New York-Synthesis 2016. An efficient strategy for a four-step synthesis of angularly fused tricyclic hydantoins as suitable precursors of cis-fused bicyclic α-amino acids is developed by combining a highly diastereoselective Bucherer-Bergs reaction of 2-alkenylcycloalkanones and a regiospecific selenium-induced closure of pyrrolidine ring. This methodology was applied in a five-step synthesis of bicycloproline derivatives in high overall yield. The method could be used for the multigram preparation of free conformationally constrained bicyclic α-amino acids with two points of diversity (size of cycloalkyl ring and substituent at the pyrrolidine ring).|
|Appears in Collections:||Institute for Information Technologies, Kragujevac|
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