Substituted coumarins as esterase-sensitive prodrug moieties with improved release rates
作者:Yuan Liao、Binghe Wang
DOI:10.1016/s0960-894x(99)00289-9
日期:1999.7
Our laboratory has recently reported a coumarin-based prodrug system for the preparation of esterase-sensitive prodrugs of amines, peptides, and peptidomimetics. However, the release from this prodrug system was undesirably slow for some drug moieties. In this report, we describe the synthesis and evaluation of several substituted coumarin-based prodrugs of model amines with significantly increased release rates.
The Effect of Phenyl Substituents on the Release Rates of Esterase-Sensitive Coumarin-Based Prodrugs.
作者:Yuan LIAO、Siska HENDRATA、Sung Yong BAE、Binghe WANG
DOI:10.1248/cpb.48.1138
日期:——
peptidomimetics. The drug release rates from this prodrug system were found to be dependent on the structural features of the drug moiety. In certain cases, the release can be undesirably slow for drugs that are secondary amines with relatively high pKa's. Aimed at finding ways to manipulate the release rates to suit the need of different drugs, we have examined the effect of the phenyl ring substitutions
The effect of substitution patterns on the release rates of opioid peptides DADLE and [Leu5]-enkephalin from coumarin prodrug moieties
作者:Lindsay A. Zych、Wenqian Yang、Yuan Liao、Kellee R. Griffin、Binghe Wang
DOI:10.1016/j.bioorg.2003.12.002
日期:2004.4
A coumarin-based prodrug system has been developed in our laboratory for the preparation of esterase-sensitive prodrugs of amines, peptides, and peptidomimetics. The drug release rates from this prodrug system were found to be dependent on the structural features of the drug moiety. The effect of the phenyl ring substitutions on the release kinetics of such prodrugs of model amines was examined recently and it was found that appropriately positioned alkyl substituents on the phenyl ring could help to facilitate the release. Aimed at further understanding the structure-release rate relationship of the coumarin-based cyclic prodrugs, we synthesized and examined a series of substituted coumarinic acid derivatives of opioid peptides, DADLE, and [Leu(5)]-enkephalin. (C) 2003 Elsevier Inc. All rights reserved.