Discovery of the Hemifumarate and (α-<scp>l</scp>-Alanyloxy)methyl Ether as Prodrugs of an Antirheumatic Oxindole: Prodrugs for the Enolic OH Group
作者:Ralph P. Robinson、Lawrence A. Reiter、Wayne E. Barth、Anthony M. Campeta、Kelvin Cooper、Brian J. Cronin、Rosalina Destito、Kathleen M. Donahue、Fred C. Falkner、Eugene F. Fiese、Diane L. Johnson、Alexander V. Kuperman、Theodore E. Liston、Deborah Malloy、John J. Martin、David Y. Mitchell、Frank W. Rusek、Sheri L. Shamblin、Charles F. Wright
DOI:10.1021/jm950575k
日期:1996.1.1
acceptable bioavailabilities of 1 across species (rats, dogs, and monkeys) followed the inclusion of ionizable functionality within the promoiety to compensate for masking the polar enolic OH group of the free drug. However, the introduction of ionizable functionality was often associated with decreased stability, as demonstrated by the hemisuccinate, hemiadipate, hemisuberate, and alpha-amino ester derivatives
Synthesis of<i>N</i>-alkoxycarbonyl and<i>N</i>-carboxamide derivatives of anti-inflammatory oxindoles
作者:Ralph P. Robinson、Kathleen M. Donahue
DOI:10.1002/jhet.5570310644
日期:1994.11
The synthesis of N-alkoxycarbonyl and N-carboxamide derivatives of anti-inflammatory oxindoles is described. These compounds, sought as potential prodrugs of the parent anti-inflammatory agents, were obtained by ring opening of the oxadiazine dione intermediates formed by the treatment of 1-unsubstituted 3-acyloxindoles with chlorocarbonyl isocyanate.