Synthesis and hydrolytic behavior of two novel tripartate codrugs of naltrexone and 6beta-naltrexol with hydroxybupropion as potential alcohol abuse and smoking cessation agents.

Abstract:

:A codrug approach for simultaneous treatment of alcohol abuse and tobacco dependence is considered as very desirable because of substantial evidence that smoking is increased significantly during drinking, and that smoking is regarded as a behavioral 'cue' for the urge to consume alcohol. The purpose of this study was to design and synthesize codrugs for simultaneous treatment of alcohol abuse and tobacco dependence. Two novel tripartate codrugs of naltrexone (NTX) and naltrexol (NTXOL) covalently linked to hydroxybupropion (BUPOH) were synthesized (25 and 26, respectively), and their hydrolytic cleavage to the parent drugs was determined. These codrugs were generally less crystalline when compared to NTX, or NTXOL, as indicated by their lower melting points, and were expected to be more lipid-soluble. Also, the calculated clogP values were found to be higher for the codrugs compared to those for NTX and NTXOL. The studies on the hydrolysis of the codrugs provided good evidence that they could be efficiently converted to the parent drugs in buffer at physiological pH. Thus, these codrugs are likely to be cleaved enzymatically in vivo to generate the parent drugs, and are considered to be potential candidates for simultaneous treatment of alcohol abuse and tobacco dependence.

journal_name

Bioorg Med Chem

authors

Hamad MO,Kiptoo PK,Stinchcomb AL,Crooks PA

doi

10.1016/j.bmc.2006.06.018

subject

Has Abstract

pub_date

2006-10-15 00:00:00

pages

7051-61

issue

20

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(06)00475-5

journal_volume

14

pub_type

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