Synthetic studies on terpenoids. 5. Synthesis of. gamma.-and. delta.-lactones from. beta.-(2, 7-dimethyl-1, 2-dihydroxycycloheptyl) propionic acid

OS Bhanot, TK Das, I Gupta, HS Suri…

Index: Bhanot,O.S. et al. Journal of Organic Chemistry, 1977 , vol. 42, # 9 p. 1623 - 1627

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Citation Number: 3

Abstract

Starting from 2, 7-dimethylcycloheptanone, the lactones VII, VIII, XIV, XVI, XX, and XXI have been synthe-sized and their conformation and stereochemistry studied. XVI represents the partial structure of IIa. VI1 and XXI represent the partial structures of 111 and IIc, respectively. Isomerization of &lactone to y-lactone in the presence of acid has been discussed.