functionalized dihydro-[1,3]oxazino[4,3-a] isoindole and tetrahydroisoquinoline skeletons has been developed through the addition-cyclization process of ynamides 8 with N-acyliminium ions generated from N,O-acetals 6,7. The reactions were conducted under the catalysis of Cu(OTf)2, and a number of functionalized dihydro-[1,3]oxazino[4,3-a] isoindoles 9a-9y and tetrahydroisoquinolines 10a-10g, 11a-11p
[EN] BENZYLAMINE DERIVATIVES AND THEIR USE AS THROMBIN INHIBITORS<br/>[FR] DERIVES DE BENZYLAMINE ET LEUR UTILISATION COMME INHIBITEURS DE THROMBINE
申请人:MERCK & CO INC
公开号:WO2002050056A1
公开(公告)日:2002-06-27
Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having the following structure: or a pharmaceutically acceptable salt thereof, e.g. where R3 is -CH2NH2, -CH2CH2NH2, or -CH2NHC(O)OC(CH3)3.
A practical approach to α-aminophosphonates has been developed through an In(OTf)3-catalyzed N-α phosphonylation of N,O-acetals with triethylphosphite 7. Indoline and isoindoline N,O-acetals 6a–6j and 9a–9j and chain N,O-acetals 11a–11p were subjected to a Lewis acid catalyzed N-α phosphonylation process. As a result, the desired α-aminophosphonates 8a–8j, 10a–10j and 12a–12p were obtained in moderate
Efficient and scalable synthesis of 3,4-dihydroisoquinolin-1(2H)-ones by benzylic oxidation of tetrahydroisoquinoline derivatives using cerium ammonium nitrate (CAN)
作者:Jiajun Luo、Zhilong Li、Jiaxin He、Tong Li、Daochen Wu、Yang Lai、Haiying Sun
DOI:10.1039/d4ob00491d
日期:——
tetrahydroisoquinoline derivatives using a catalytic amount of ceriumammoniumnitrate (CAN) and a stoichiometric amount of NaBrO3 as oxidants was developed. The reaction is significantly influenced by the substituent groups on the phenyl ring. While electron-withdrawing groups on the phenyl ring can lower the reactivities of the substrates, electron-donating groups on the phenyl ring can dramatically promote
开发了一种高效且可扩展的方法,通过使用催化量的硝酸铈铵 (CAN) 和化学计量的 NaBrO 3作为氧化剂,通过四氢异喹啉衍生物的苄基氧化来合成 3,4-二氢异喹啉-1( 2 H )-酮。该反应受苯环上的取代基的显着影响。虽然苯环上的吸电子基团可以降低底物的反应活性,但苯环上的给电子基团可以显着促进氧化速率。
Unexpected enhancement of thrombin inhibitor potency with o -aminoalkylbenzylamides in the P1 position
作者:Kenneth E. Rittle、James C. Barrow、Kellie J. Cutrona、Kristen L. Glass、Julie A. Krueger、Lawrence C. Kuo、S.Dale Lewis、Bobby J. Lucas、Daniel R. McMasters、Matthew M. Morrissette、Philippe G. Nantermet、Christina L. Newton、William M. Sanders、Youwei Yan、Joseph P. Vacca、Harold G. Selnick
DOI:10.1016/s0960-894x(03)00732-7
日期:2003.10
Thrombin inhibitors incorporating o-aminoalkylbenzylamides in the P1 position were designed, synthesized and found to have enhanced potency and selectivity in several different structural classes. X-ray crystallographic analysis of compound 24 bound in the alpha-thrombin-hirugen complex provides an explanation for these unanticipated results. (C) 2003 Elsevier Ltd. All rights reserved.