4,5-Dialkylsubstituted 2-imino-1,3-thiazolidine derivatives as potent inducible nitric oxide synthase inhibitors
摘要:
In the course of our search for selective iNOS inhibitors, we have previously reported that 2-imino-1,3-oxazolidine derivatives (1) and 2-aminothiazole derivatives (2) are selective iNOS inhibitors. In order to find more potent iNOS inhibitors, we focused our efforts on the synthesis and evaluation of the inhibitory activity against iNOS and selectivity for iNOS both in vitro and in vivo of a series of 2-imino-1,3-thiazolidine derivatives (3), which are analogues of I and 2. Our results show that among the compounds synthesized (4R,5R)-5-ethyl-2-imino-4-methyl-1,3-thiazolidine [(4R,5R)-14a: ES-1537] exhibited potent inhibitory activity and selectivity for iNOS. In addition, ES-1537 had good pharmacokinetic profile in rats with BA value of 80%. It is therefore expected that ES-1537 may be therapeutically useful for the treatment of diseases related to excess production of NO. (C) 2004 Elsevier Ltd. All rights reserved.
Three enantiospecificsyntheses of 1S (2S-benzyloxethyl) oxirane (9) from L-ascorbic acid, L(+) tartaric acid, and Z-butene 1,4-diol are reported. The conversion of 9 to 2S-hydroxy-3R-nonylamine (19) is also described.
applied to a catalytic asymmetric nitrene-transfer reaction with enolsilylethers. The ruthenium catalyst was applicable to aliphatic enolsilylethers as well as aryl-containing enolsilylethers. The substrate scope of the ruthenium catalyst was superior to that of analogous chiral paddle-wheel rhodium catalysts. α-Amino ketonesderivedfrom aliphatic substrates were obtained in up to 97% ee with the
将手性桨轮双核钌催化剂应用于与烯醇甲硅烷基醚的催化不对称氮烯转移反应。钌催化剂适用于脂肪族烯醇硅醚以及含芳基的烯醇硅醚。钌催化剂的底物范围优于类似的手性桨轮铑催化剂。使用钌催化剂可获得高达 97% ee 的源自脂肪族底物的 α-氨基酮,而类似的铑催化剂仅产生适度的对映选择性。
Enzyme inhibitors. 26. Bridging hydrophobic and hydrophilic regions on adenosine deaminase with some 9-(2-hydroxy-3-alkyl)adenines
作者:Howard J. Schaeffer、Charles F. Schwender
DOI:10.1021/jm00247a002
日期:1974.1
SIMON, L.;N.;MUELLER, H. -R.;ZUTTER, H.
作者:SIMON, L.、N.、MUELLER, H. -R.、ZUTTER, H.
DOI:——
日期:——
BESSODES, M.;ABUSHANAB, E.;ANTONAKIS, K., TETRAHEDRON LETT., 1984, 25, N 51, 5899-5902