A Facile Preparation of b-Alky-b-phenylthio-a,b-unsaturated Carbonyl Compounds in a Synthesis of Alkyl Substituted Thiophene-2-carboxylic Esters
摘要:
A facile two-step or three-step one-flask procedure for a synthesis of beta-alkyl-beta-phenylthio-alpha,beta-unsaturated carbonyl compounds (3a-j) from readily prepared 3-methoxy-1-phenylthio-1-propyne (1) is described. Condensation of 3a-j with methyl thioglycolate readily affords a number of 3-alkyl- and 3,5-dialkylthiophene-2-carboxylic methyl esters.
Compounds comprising
or a pharmaceutically acceptable salt or a prodrug thereof, are disclosed, wherein Y, A, B, and J are as described.
Methods, compositions, and medicaments related thereto are also disclosed.
FUSED HETEROCYCLIC COMPOUNDS AND THROMBOPOIETIN RECEPTOR ACTIVATORS
申请人:Shigeta Yukihiro
公开号:US20120209005A1
公开(公告)日:2012-08-16
Fused heterocyclic compounds useful for prevention, treatment or improvement of diseases against which activation of the thrombopoietin receptor is effective are provided.
A compound represented by the formula (I) (wherein R
1
is an aryl group fused to a saturated ring or the like, A, B, L
1
, R
2
, L
2
, L
3
, Y, L
4
, R
3
and X are defined in the description), a tautomer, prodrug or a pharmaceutically acceptable salt of the compound or a solvate thereof.
The present invention relates generally to amide containing heterobicyclic containing pharmaceutical agents, and in particular, to amide containing heterobicyclic metalloprotease inhibiting compounds. More particularly, the present invention provides a new class of heterobicyclic MMP-3 and/or MMP-13 inhibiting compounds that exhibit an increased potency and selectivity in relation to currently known MMP-13 and MMP-3 inhibitors.
BENZENE OR THIOPHENE DERIVATIVE AND USE THEREOF AS VAP-1 INHIBITOR
申请人:R-Tech Ueno, Ltd.
公开号:US20150166525A1
公开(公告)日:2015-06-18
The present invention provides a novel benzene derivative or thiophene derivative useful as a VAP-1 inhibitor, or a medicament for the prophylaxis or treatment of a VAP-1 associated disease and the like, namely, a compound represented by the formula (I):
wherein each symbol is as defined in the present specification, or a pharmaceutically acceptable salt thereof.
Synthesis of 2-thiophenecarboxylic and 2,5-thiophenedicarboxylic acid esters via the reaction of thiophenes with the CCl4-ROH reagent in the presence of vanadium, iron, and molybdenum catalysts
作者:R. I. Khusnutdinov、N. A. Shchadneva、A. R. Baiguzina、R. R. Mukminov、Yu. Yu. Mayakova、A. A. Smirnov、U. M. Dzhemilev
DOI:10.1134/s0965544108060121
日期:2008.11
2-Thiophenecarboxylic and 2,5-thiohenedicarboxylic acid esters were synthesized via the reaction of thiophene with the CCl(4)-ROH-catalyst system, with a total yield of 44-85%. A possible reaction scheme includes the successive steps of alkylation of thiophene with carbon tetrachloride, leading to 2-trichloromethylthiophene, and alcoholysis of the product giving the corresponding 2-thiophenecarboxylate. The best catalysts for this reaction are VO(acac)(2), Fe(acac)(3), and Mo(CO)(6).