Unexpected enhancement of thrombin inhibitor potency with o -aminoalkylbenzylamides in the P1 position
摘要:
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.
Platelet Aggregation Inhibiting and Anticoagulant Effects of Oligoamines, XXI: 4,4′-Alkylene-bis-sydnone Imines
作者:Klaus Rehse、Antje Martens
DOI:10.1002/ardp.19933260511
日期:——
their antiplatelet (Born‐test, collagen) and anticoagulant (Quick‐test) activity in vitro. The most active compounds were found in the ethylene and propylene series. The most favourable substituents in 3‐position of the sydnone were hexyl to octyl or phenylethyl to phenylbutyl groups. Six compounds exhibit an IC50 ≤ 10 μmol/L against plateletaggregation. Three compounds showed an IC75 ≤ 200 μmol/L
Hydrogenation of Nitriles and Ketones Catalyzed by an Air-Stable Bisphosphine Mn(I) Complex
作者:Stefan Weber、Berthold Stöger、Karl Kirchner
DOI:10.1021/acs.orglett.8b03132
日期:2018.11.16
Efficient hydrogenations of nitriles and ketones with molecular hydrogen catalyzed by a well-defined bench-stable bisphosphine Mn(I) complex are described. These reactions are environmentally benign and atomically economic, implementing an inexpensive, earth-abundant nonprecious metal catalyst. A range of aromatic and aliphatic nitriles and ketones were efficiently converted into primary amines and
Phosphine-Free Manganese Catalyst Enables Selective Transfer Hydrogenation of Nitriles to Primary and Secondary Amines Using Ammonia–Borane
作者:Koushik Sarkar、Kuhali Das、Abhishek Kundu、Debashis Adhikari、Biplab Maji
DOI:10.1021/acscatal.0c05406
日期:2021.3.5
primary and secondary amines by nitrilehydrogenation, employing a borrowing hydrogenation strategy. A class of phosphine-free manganese(I) complexes bearing sulfur side arms catalyzed the reaction under mild reaction conditions, where ammonia–borane is used as the source of hydrogen. The synthetic protocol is chemodivergent, as the final product is either primary or secondary amine, which can be controlled
Platelet Aggregation Inhibiting and Anticoagulant Effects of Oligoamines, XIX: 4,4′-Phenylene-bis-sydnone Imines
作者:Klaus Rehse、Michael Kämpfe、Antje Martens
DOI:10.1002/ardp.19933260309
日期:——
Fourteen 4,4′‐m‐phenylene‐ and two 4,4′‐p‐phenylene‐bis‐sydnone imine hydrochlorides have been synthesized. All compounds exhibited good solubility in water. In the m‐series the 3‐(3‐phenylpropyl)‐derivative 5c and the 3‐hexyl compound 51 showed antiplatelet activities at or below 10 μmol/L (IC50, Born‐test with collagen). The corresponding p‐compounds had the same (61) or slightly lower (6c) activity