由B(C醚取代的醇与羰基化合物的化学选择性脱氧6 ˚F 5)3 -催化还原(HME 2 SICH 2)2 †
摘要:
使用(HMe 2 SiCH 2)2作为还原剂,开发了B(C 6 F 5)3催化的醚取代的醇和羰基化合物的脱氧反应。这种独特的试剂显示出优于传统的以硅为中心的氢硅烷的独特优势,可高收率地提供相应的烷烃,并对醚,芳基卤化物和烯烃具有良好的耐受性。对照实验表明(HMe 2 SiCH 2)2可能以分子内Si / O活化方式促进该方法。
由B(C醚取代的醇与羰基化合物的化学选择性脱氧6 ˚F 5)3 -催化还原(HME 2 SICH 2)2 †
摘要:
使用(HMe 2 SiCH 2)2作为还原剂,开发了B(C 6 F 5)3催化的醚取代的醇和羰基化合物的脱氧反应。这种独特的试剂显示出优于传统的以硅为中心的氢硅烷的独特优势,可高收率地提供相应的烷烃,并对醚,芳基卤化物和烯烃具有良好的耐受性。对照实验表明(HMe 2 SiCH 2)2可能以分子内Si / O活化方式促进该方法。
Design and Synthesis of Pironetin Analogue/Combretastatin A-4 Hybrids and Evaluation of Their Cytotoxic Activity
作者:Sandra Torijano-Gutiérrez、Concepción Vilanova、Santiago Díaz-Oltra、Juan Murga、Eva Falomir、Miguel Carda、J. Alberto Marco
DOI:10.1002/ejoc.201301725
日期:2014.4
describe the preparation of a series of hybrid molecules containing a combretastatinA-4 moiety and a pironetinanalogue fragment linked by an ester spacer of variable length. The cytotoxicactivities of these compounds have been measured and the relationship between the structure and cytotoxicity is discussed. Some of the tested compounds showed cytotoxicity values of the same order of magnitude as
We recently described the discovery of oxygenated N-alkyl deoxynojirimycin (DNJ) derivative 7 (CM-10-18) with antiviral activity against dengue virus (DENY) infection both in vitro and in vivo. This imino sugar was promising but had an EC50 against DENY in BHK cells of 6.5 mu M, which limited its use in in vivo. Compound 7 presented structural opportunities for activity relationship analysis, which we exploited and report here. These structure activity relationship studies led to analogues 2h, 2l, 3j, 3l, 3v, and 4b-4c with nanomolar antiviral activity (EC50 = 0.3-0.5 mu M) against DENY infection, while maintaining low cytotoxicity (CC50 > 500 mu M, SI > 1000). In male Sprague-Dawley rats, compound 3l was well tolerated at a dose up to 200 mg/kg and displayed desirable PK profiles, with significantly improved bioavailability (F = 92 +/- 4%).
GLUCOSYLCERAMIDE SYNTHASE INHIBITION FOR THE TREATMENT OF COLLAPSING GLOMERULOPATHY AND OTHER GLOMERULAR DISEASE
A compound is represented by Structural Formula (I):
or a pharmaceutically acceptable salt thereof. A pharmaceutical composition comprises a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. A method of treating a subject in need thereof comprises administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof. The subject has type 2 diabetes; renal hypertrophy or hyperplasia associated with diabetic nephropathy; Tay-Sachs; Gaucher's; or Fabry's disease. Methods of decreasing plasma TNF-α, lowering blood glucose levels, decreasing glycated hemoglobin levels, inhibiting glucosylceramide synthase, and lowering glycosphingolipid concentrations in a subject in need thereof respectively comprise administering to the subject a therapeutically effective amount of a compound represented by Structural Formula (I) or a pharmaceutically acceptable salt thereof.