Facile Ramberg–Bäcklund reactions for the synthesis of 2,3-disubstituted cyclopentenones; a short synthetic route to tetrahydrodicranenone B
作者:Guy Casy、Richard J. K. Taylor
DOI:10.1039/c39880000454
日期:——
The Ramberg–Bäcklundreaction has been employed to prepare protected 2,3-disubstituted cyclopent-3-enones which have been converted into cyclopent-3- and -2-enones; the α-iodosulphone precursors were obtained by a double Michael approach using a three-component coupling sequence to introduce the alkyl substituents and this methodology has been used to develop a shortsyntheticroute to the antimicrobial