TAK-700 是一种有效且高度选择性的人 17, 20-裂解酶抑制剂，IC50 为 38 nM，比其他 CYP（例如 11-羟化酶和 CYP3A4）选择性高出 1000 倍以上。

TAK-700 (Orteronel) is a potent and highly selective human 17, 20-lyase inhibitor with IC50 of 38 nM, exhibits >1000-fold selectivity over other CYPs (e.g. 11-hydroxylase and CYP3A4). Phase 3.

In vitro, TAK-700 shows the potent inhibitory activity against rat and human steroid 17,20-lyase with IC50 of 54 nM and 38 nM, respectively. While other CYP isoforms including 11-hydroxylase and CYP3A4 are not significantly affected by TAK-700. [1] In microsomes expressing human CYP isoforms, TAK-700 exhibit greater inhibitory effects on 17,20-lyase with IC50 of 19 nM compared to the other CYP isoforms. [1] TAK-700 shows the inhibitory activity against monkey 17,20-lyase and 17-hydroxylase with IC50 of 27 nM and 38 nM, respectively. [2] In monkey adrenal cells, TAK-700 inhibits the ACTH stimulated production of DHEA and androstenedione with IC50 of 110 nM and 130 nM, respectively. Moreover, TAK-700 also potently inhibits DHEA production in human adrenocortical tumor line H295R cells with IC50 of 37 nM. [2]

In cynomolgus monkeys, oral treatment of TAK-700 at a dose of 1 mg/kg markedly reduces serum testosterone and dehydroepiandrosterone (DHEA) levels. [1] Oral treatment of TAK-700 at a dose of 1 mg/kg results in favorable pharmacokinetic parameters with Tmax, Cmax, t1/2 and AUC0-24 hours of 1.7 hours, 0.147 μg/mL, 3.8 hours and 0.727 μg h/mL, respectively. [2]

426219-18-3

C18H17N3O2

307.353

Orteronel;(S/R)-Orteronel

H2O:<1 mgml
Ethanol:8 mg/mL (26.02 mM)
DMSO:57 mg/mL (185.5 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years