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首页> 外文期刊>Journal of Medicinal Chemistry >Potent and selective non-peptidic inhibitors of endothelin-converting enzyme-1 with sustained duration of action.
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Potent and selective non-peptidic inhibitors of endothelin-converting enzyme-1 with sustained duration of action.

机译：具有持续作用时间的内皮素转化酶-1的有效和选择性非肽类抑制剂。

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Potent and selective non-peptidic inhibitors of human endothelin-converting enzyme-1 (ECE-1) have been designed as potential modulators of endothelin (ET-1) production in vivo. Because of its unique structural characteristics and long duration of action in vivo, the dual ECE-1 and neutral endopeptidase 24.11 (NEP) inhibitor, CGS 26303, was selected as an attractive lead for further optimization of potency and selectivity. Replacement of the P(1)' biphenyl substituent of CGS 26303 by a conformationally restricted 3-dibenzofuranyl group led to more potent and more selective ECE-1 inhibitors, such as the tetrazole 27. The remarkable effect of this P(1)' modification allowed for the first time phosphonomethylcarboxylic acids, such as 29, to display both potent (IC(50) = 22 nM) and selective (104-fold vs NEP) ECE-1 inhibition. Chemoenzymatic syntheses of the new alpha-amino acid (S)-3-dibenzofuran-3-ylalanine intermediate were developed, and improved procedures to generate substituted alpha-aminoalkylphosphonic acids were devised to support the production of various analogues. Although additional gains in intrinsic ECE-1 inhibitory potency could occasionally be achieved by addition of a P(1) side chain, these compounds (e.g. 43a) showed poor functional activity in vivo in the big ET-1 pressor test. Phosphonoalkyl dipeptides featuring 3-dibenzofuranyl groups in both the P(1)' and P(2)' positions were also very potent ECE-1 inhibitors, albeit lacking the desired selectivity against NEP. Functionally, 27and 29 were the two most efficacious compounds from this study, producing sustained inhibition of ECE-1 activity in rats, as measured by their ability to block the hypertensive effects induced by big ET-1. This profile was similar to that of a potent ET(A)/ET(B) dual receptor antagonist, SB 209670. Due to their favorable in vitro and in vivo profiles, 27 (CGS 34043) and 29 (CGS 35066) constitute new pharmacological tools useful in assessing the role of ECE-1 in pathological conditions.
机译：人类内皮素转化酶-1（ECE-1）的有效和选择性非肽类抑制剂已被设计为体内内皮素（ET-1）生产的潜在调节剂。由于其独特的结构特征和在体内的长效作用，双重ECE-1和中性肽链内切酶24.11（NEP）抑制剂CGS 26303被选为进一步优化效能和选择性的诱人先导。用构象受限的3-二苯并呋喃基取代CGS 26303的P（1）'联苯取代基导致更有效和更具选择性的ECE-1抑制剂，例如四唑27。这种P（1）'修饰的显着效果首次允许膦酰基甲基羧酸（如29）显示出强效（IC（50）= 22 nM）和选择性（相对NEP的104倍）ECE-1抑制作用。开发了新的α-氨基酸（S）-3-二苯并呋喃-3-基丙氨酸中间体的化学合成方法，并设计了改进的程序来生成取代的α-氨基烷基膦酸以支持各种类似物的生产。尽管通过添加P（1）侧链偶尔可以实现内在ECE-1抑制能力的额外提高，但是这些化合物（例如43a）在大ET-1加压试验中显示出较差的体内功能活性。尽管在NEP方面缺乏所需的选择性，但在P（1）'和P（2）'位置均具有3-二苯并呋喃基的膦酰基烷基二肽也是非常有效的ECE-1抑制剂。从功能上讲，27和29是这项研究中最有效的两种化合物，它们通过抑制大ET-1诱导的高血压作用的能力而对大鼠的ECE-1活性产生持续抑制作用。该特性类似于有效的ET（A）/ ET（B）双受体拮抗剂SB 209670的特性。由于其良好的体内和体外特性，27（CGS 34043）和29（CGS 35066）构成了新的药理学用于评估ECE-1在病理状况中的作用的工具。

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