Abstract
New conformationally rigid spirane analogues of γ-aminobutyric acid, namely, 4-aminospiro[2.2]pentanecarboxylic and 1-aminospiro[2.3]hexane-5-carboxylic acids were synthesized from the corresponding 4and 5-methoxycarbonyl-1-nitrospiro[2.n]alkane-1-carboxylic esters obtained in turn by the [1+2] cycloaddition of ethyl nitrodiazoacetate to methylidenecycloalkanecarboxylic esters.
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