一些六氢偶氮并[4,3- b ]吲哚,四和两个六氢吡咯并[1',2':1,2,]吡咯并[3,4- b ]吲哚和四氢吡咯并[2',1': 5,1]咪唑并[3,4- a ]吲哚。1,2,3,4-四氢-2-苯氧基羰基-7-苯基磺酰基偶氮基[4,3 - b ]吲哚-6(5 H)-one的晶体结构测定
摘要:
六氢偶氮噻吩并[4,3- b ]吲哚(2a - c)是由1-苯基磺酰基吲哚通过在C-2上引入适当的侧链,通过锂化反应,然后进行分子内曼尼希环化反应而合成的。然后由(2c)制备1,2,3,4-四氢-2-苯氧基羰基-7-苯基磺酰基偶氮基[4,3- b ]吲哚-6(5 H)-一(2e),并通过X射线法 (2c)中的苄基也被其他氨基甲酸酯基取代。氨基甲酸酯的裂解产生吡咯并[1'2':1,2,]吡咯并[3,4- b]吲哚或3-甲酰基-2-(4,5-二氢吡咯-2-基)吲哚。2-吲哚-2-基吡咯烷与甲醛在甲醇甲醇中的反应生成吡咯并[2',1':5,1]咪唑并[3,4- a ]吲哚。
Formation of Non-Natural α,α-Disubstituted Amino Esters via Catalytic Michael Addition
作者:Kip A. Teegardin、Lacey Gotcher、Jimmie D. Weaver
DOI:10.1021/acs.orglett.8b03161
日期:2018.11.16
of amino esters is explored, and the first catalytic Michaeladdition of α-amino esters is demonstrated. These studies indicate that the acidity of the αC–H is the primary factor determining reactivity. Thus, polyfluorophenylglycine amino esters yield novel α-amino esters in the presence of a catalytic amount of a guanidine-derived base and Michael acceptors. Reactivity requires an acidic N–H, which
Novel n(phenylsulphonyl)glycine derivatives and their therapeutic use
申请人:——
公开号:US20040063725A1
公开(公告)日:2004-04-01
The present invention relates to novel N-(phenylsulphonyl)glycyl-glycine compounds, which are defined by formula I and the description, as well as their method of preparation and their use in therapeutics
1
Direct and Divergent Solid-Phase Synthesis of Azobenzene and Spiropyran Derivatives
作者:Ravichandran H. Kollarigowda、Paul V. Braun
DOI:10.1021/acs.joc.0c02375
日期:2021.3.19
Here, we report a solid-phase approach to synthesize azobenzene and spiropyran derivatives. The divergent synthesis process requires no purification steps to obtain the desired product with a 28–55% yield, depending on the specific compound. For the spiropyran compounds, solid-phase resin cleavage is performed under mild conditions to minimize spiropyran ring opening. The solid-phase method enables the
The present invention includes arginase enzyme inhibitors, compositions comprising these arginase inhibitors, and methods of treating or diagnosing conditions characterized either by abnormally high arginase activity or abnormally low nitric oxide levels in a mammal, comprising administering compositions of the invention to the mammal.
[EN] PRECURSOR COMPOUNDS FOR THE RADIOSYNTHESIS OF [18F] NORCHLORO-FLUOROHOMOEPIBATIDINE<br/>[FR] COMPOSÉS PRÉCURSEURS POUR LA RADIOSYNTHÈSE DE [18F]NORCHLORO-FLUOROHOMOÉPIBATIDINE
申请人:ABX ADVANCED BIOCHEMICAL COMPOUNDS GMBH
公开号:WO2013017585A1
公开(公告)日:2013-02-07
The invention relates to a compound of formula Ia or Ib wherein R1 represents -CO2R3, -COR4or -R5, wherein R3 represents unsubstituted or substituted C1-C6 alkyl, R4 represents hydrogen, unsubstituted or substituted C1-C6 alkyl, and R5 represents hydrogen, unsubstituted or substituted C1-C6 alkyl, R2 represents -N+ (R6)(R7)(R8)X- or a nitro group, wherein R6, R7, R8 independently of each other represent unsubstituted or substituted C1-C6 alkyl or unsubstituted or substituted -(CH2)n- with n = 1 to 12 provided that at least two of the substituents R6 R7 R8 are C1-C6 alkyl, and X- represents a halide, sulphonate, unsubstituted or substituted acetate, sulphate, hydrogen sulphate, nitrate, perchlorate, or oxalate.