In Vitro and in Vivo Evaluation of Dihydropyrimidinone C-5 Amides as Potent and Selective α<sub>1A</sub> Receptor Antagonists for the Treatment of Benign Prostatic Hyperplasia
作者:James C. Barrow、Philippe G. Nantermet、Harold G. Selnick、Kristen L. Glass、Kenneth E. Rittle、Kevin F. Gilbert、Thomas G. Steele、Carl F. Homnick、Roger M. Freidinger、Rick W. Ransom、Paul Kling、Duane Reiss、Theodore P. Broten、Terry W. Schorn、Raymond S. L. Chang、Stacey S. O'Malley、Timothy V. Olah、Joan D. Ellis、Andrea Barrish、Kelem Kassahun、Paula Leppert、Dhanapalan Nagarathnam、Carlos Forray
DOI:10.1021/jm990612y
日期:2000.7.1
alpha(1) Adrenergic receptors mediate both vascular and lower urinary tract tone, and alpha(1) receptor antagonists such as terazosin (1b) are used to treat both hypertension and benign prostatic hyperplasia (BPH). Recently, three different subtypes of this receptor have been identified, with the alpha(1A) receptor being most prevalent in lower urinary tract tissue. This paper explores 4-aryldihydropyrimidinones attached to an aminopropyl-4-arylpiperidine via a C-5 amide as selective alpha(1A) receptor subtype antagonists. In receptor binding assays, these types of compounds generally display K-i values for the alpha(1a) receptor subtype <1 nM while being greater than 100-fold selective versus the alpha(1b) and alpha(1d) receptor subtypes. Many of these compounds were also evaluated in vivo and found to be more potent than terazosin in both a rat model of prostate tone and a dog model of intra-urethral pressure without significantly affecting blood pressure. While many of the compounds tested displayed poor pharmacokinetics, compound 48 was found to have adequate bioavailability (>20%) and half-life (>6 h) in both rats and dogs. Due to its selectivity for the alpha(1a) over the alpha(1d) and alpha(1d) receptors as well as its favorable pharmacokinetic profile, 48 has the potential to relieve the symptoms of BPH without eliciting effects on the cardiovascular system.
Expedient synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones
作者:Thomas G. Steele、Craig A. Coburn、Michael A. Patane、Mark G. Bock
DOI:10.1016/s0040-4039(98)02155-8
日期:1998.12
A new procedure for the synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones is described. Two plausible mechanisms for the key chemical transformation are advanced. (C) 1998 Elsevier Science Ltd. All rights reserved.
Unprecedented Catalytic Three Component One-Pot Condensation Reaction: An Efficient Synthesis of 5-Alkoxycarbonyl- 4-aryl-3,4-dihydropyrimidin-2(1H)-ones
作者:Essa H. Hu、Daniel R. Sidler、Ulf-H. Dolling
DOI:10.1021/jo970846u
日期:1998.5.1
Design and Synthesis of Novel α<sub>1</sub><sub>a</sub> Adrenoceptor-Selective Antagonists. 2. Approaches To Eliminate Opioid Agonist Metabolites via Modification of Linker and 4-Methoxycarbonyl-4-phenylpiperidine Moiety
作者:T. G. Murali Dhar、Dhanapalan Nagarathnam、Mohammad R. Marzabadi、Bharat Lagu、Wai C. Wong、George Chiu、Sriram Tyagarajan、Shou Wu Miao、Fengqi Zhang、Wanying Sun、Dake Tian、Quanrong Shen、Jack Zhang、John M. Wetzel、Carlos Forray、Raymond S. L. Chang、Theodore P. Broten、Terry W. Schorn、Tsing Bao Chen、Stacy O'Malley、Richard Ransom、Kathryn Schneck、Robert Bendesky、Charles M. Harrell、Kamlesh P. Vyas、Kanyin Zhang、John Gilbert、Douglas J. Pettibone、Michael A. Patane、Mark G. Bock、Roger M. Freidinger、Charles Gluchowski
DOI:10.1021/jm990201h
日期:1999.11.1
by modification of the linker or finding alternative piperidine moieties which when cleaved as a consequence of metabolism would not give rise to mu-opioid activity. Modification of the linker gave several compounds with good alpha(1a) binding affinity (K(i) = < 1 nM) and selectivity (>300-fold over alpha(1b) and alpha(1d)). In vitro analysis in the microsomal assay revealed these modifications did
Enantioselective Synthesis of SNAP-7941: Chiral Dihydropyrimidone Inhibitor of MCH1-R
作者:Jennifer M. Goss、Scott E. Schaus
DOI:10.1021/jo801463j
日期:2008.10.3
alkaloid-catalyzed Mannich reaction of beta-keto esters to acylimines and the second was the chiral phosphoric acid-catalyzed Biginelli reaction. Completion of the synthesis was accomplished via selective urea formation at the N3 position of the dihydropyrimidone with the 3-(4-phenylpiperidin-1-yl)propylamine side chain fragment. The synthesis of SNAP-7921 highlights the utility of asymmetric organocatalytic