(3R)-3-Amino-4-(2,4,5-trifluorophenyl)-N-{4-[6-(2-methoxyethoxy)benzothiazol-2-yl]tetrahydropyran-4-yl}butanamide as a potent dipeptidyl peptidase IV inhibitor for the treatment of type 2 diabetes
and 3-amino-N-(4-aryltetrahydropyran-4-yl)butanamides were synthesized and evaluated as dipeptidylpeptidaseIV (DPP-IV) inhibitors. Derivatives incorporating the 6-substituted benzothiazole group showed highly potent DPP-IV inhibitory activity. Oral administration of (3R)-3-amino-4-(2,4,5-trifluorophenyl)-N-4-[6-(2-methoxyethoxy)benzothiazol-2-yl ]tetrahydropyran-4-yl}butanamide (12u) reduced blood
Synthesis and Conformational Studies of Tertiary Alcohols Derived from Tetrahydro-4<i>H</i>-pyran-4-one and Tetrahydrothiopyran-4-one
作者:Kevin Tran、K. Darrell Berlin、Elizabeth M. Holt、Randal Hallford、Margaret A. Eastman、Valentina K. Yu、K. D. Praliev
DOI:10.1080/104265090507641
日期:2005.1.1
Abstract A series of derivatives of tetrahydro-4 H-pyran-4-one and tetrahydrothiopyran-4-one have been prepared by condensation with aryl Grignard reagents. IR spectra, 1 H and 13 C NMR spectral analyses, and elemental analyses support the structures. A single-crystal X-ray diffraction analysis of 4-(3,5-dimethylphenyl)tetrahydrothiopyran-4-ol [a = 9.729(10), b = 12.846(2), c = 9.970(10) Åi; space
摘要 通过与芳基格氏试剂缩合制备了四氢-4 H-吡喃-4-酮和四氢噻喃-4-酮的一系列衍生物。IR 光谱、 1 H 和 13 C NMR 光谱分析和元素分析支持结构。4-(3,5-二甲基苯基)四氢噻喃-4-醇的单晶 X 射线衍射分析 [a = 9.729(10), b = 12.846(2), c = 9.970(10) Åi; 空间群 Pna2(1)] 证实芳基位于伪赤道位置,杂环在分子硫端附近略微变平。
Electrochemically Driven Deoxygenative Borylation of Alcohols and Carbonyl Compounds
作者:Weiyang Guan、Yejin Chang、Song Lin
DOI:10.1021/jacs.3c03418
日期:2023.8.9
We present a new, unified approach for the transformation of benzylic and allylic alcohols, aldehydes, and ketones into boronic esters under electroreductive conditions. Key to our strategy is the use of readily available pinacolborane, which serves both as an activator and an electrophile by first generating a redox-active trialkylborate species and then delivering the desired deoxygenatively borylated
Electroreductive formylation of activated alcohols<i>via</i>radical–polar crossover
作者:Jungtaek Kang、Heyjin Cho、Hyunwoo Kim
DOI:10.1039/d3cc01529g
日期:——
The direct synthesis of sterically hindered aldehydes is highly challenging. Herein, we report a direct approach to generate such compounds via electroreductive cleavage of the C(sp3)–O bond of activated alcohols. Under the established reaction conditions, benzylic radical intermediates were efficiently generated. A subsequent radical–polar crossover generated carbanions that further reacted with N
The present invention provides a naphthyridine derivative represented by the formula (1)
wherein A is lower alkylene; R1 is H or an electron pair "-"; R2 is optionally substituted phenyl;
when R1 is an electron pair "-", R3 is a group represented by
(wherein R4 and R5 each represent lower alkyl, etc.); when R1 is H, R3 is a group -S-R6 (wherein R6 is lower alkyl, etc.); and R7 is H or lower alkyl; and also provides an analgesic composition containing the above derivative as an active ingredient.
本发明提供了一种由式(1)表示的萘啶衍生物
其中 A 是低级亚烷基;R1 是 H 或电子对"-";R2 是任选取代的苯基;
当 R1 是电子对"-"时,R3 是由以下式表示的基团
(其中R4和R5各自代表低级烷基等);当R1是H时,R3是一个基团-S-R6(其中R6是低级烷基等);R7是H或低级烷基;还提供了一种含有上述衍生物作为活性成分的镇痛组合物。