N , N ′-Dialkylaminoalkylcarbonyl (DAAC) prodrugs and aminoalkylcarbonyl (AAC) prodrugs of 4-hydroxyacetanilide and naltrexone with improved skin permeation properties
作者:H. Devarajan-Ketha、K.B. Sloan
DOI:10.1016/j.bmcl.2011.04.118
日期:2011.7
After the hydrolysis of the ester, the carboxylic acid product was subsequently coupled with the parent drug via a dicyclohexyl carbodiimide (DCC) mediated coupling to yield the DAAC-APAP-HCl prodrugs in excellent yields. The AAC prodrugs were synthesized using commercially available Boc-protected amino acids using DCC or EDCI as coupling agents. The yields of the prodrugs synthesized using these two
报道了酚类药物对乙酰氨基酚(APAP)和纳曲酮(NTX)的N,N'-二烷基氨基烷基羰基(DAAC)和氨基烷基羰基(AAC)前药。还提出了将碱性胺基团掺入酚类药物的酰基前药的部分中对其皮肤渗透性能的影响。DAAC-APAP前药是通过三步程序从卤代烷基羰基酯开始合成的,卤代烷基羰基酯与五种不同的胺反应:二甲胺,二乙胺,二丙胺,吗啉和哌啶。氨基和酰基的羰基之间的间隔为1-3 CH 2。酯水解后,随后通过二环己基碳二亚胺(DCC)介导的偶联将羧酸产物与母体药物偶联,从而以优异的收率得到DAAC-APAP-HCl前药。AAC前药是使用DCC或EDCI作为偶联剂,使用可商购的Boc保护的氨基酸合成的。比较了使用这两种不同方法合成的前药的收率。在缓冲液(pH 6.0,20 mM)中测量DAAC和AAC系列的一些成员的半衰期(t 1/2)。在水解实验中评估的成员的t 1/2范围为15–113分钟。在AAC