Temocaprilat 是一种血管紧张素转换酶 (ACE) 抑制剂。 Temocaprilat 通过缺乏 EHBR 的 cMOAT 有效地从胆汁中排泄，而许多其他 ACE 抑制剂对 cMOAT 的亲和力较低。

Temocaprilat is an Angiotensin-converting Enzyme (ACE) inhibitor. Temocaprilat is effectively excreted in bile via cMOAT that is deficient in EHBR and that many of other ACE inhibitors have low affinity for cMOAT.

Biliary clearance of Temocaprilat after i.v. administration of [14C]temocapril x HCl (1.0 mg/kg) in EHBR was significantly lower than that in Sprague-Dawley rats (5.00 ml/min/kg for Sprague-Dawley rats vs. 0.25 ml/min/kg for EHBR). The uptake of Temocaprilat into canalicular membrane vesicles (CMVs) prepared from Sprague-Dawley rats was stimulated in the presence of ATP, whereas little stimulation was observed in CMVs from EHBR. The initial uptake rate of ATP-dependent transport of Temocaprilat showed saturation kinetics; we obtained an apparent V(max) value of 1.14 nmol/min/mg protein and a K(m) value 92.5 microM. ATP-dependent transport of Temocaprilat was competitively inhibited by 2,4-dinitrophenyl-S-glutathione, a typical substrate for cMOAT with an inhibition constant (K(i)) of 25.8 microM. The K(m) value for the uptake of 2,4-dinitrophenyl-S-glutathione into CMVs (K(m) = 29.6 microM) was consistent with this K(i) value. In addition, the ATP-dependent uptake of 2,4-dinitrophenyl-S-glutathione was inhibited by Temocaprilat in a concentration-dependent manner. Active forms of some ACE inhibitors (benazepril, cilazapril, delapril, enalapril and imidapril) did not affect the transport of Temocaprilat into CMVs even at concentrations as high as 200 microM[1].

110221-53-9

C21H24N2O5S2

448.56

RNH5139;RNH-5139;RS 5139;替莫普利;RNH 5139;RS5139;RS-5139

DMSO:Soluble
Powder: -20°C for 3 years
In solvent: -80°C for 2 years