Nonpeptidyl platelet aggregation inhibitors having specificity for the
申请人:Genentech, Inc.
公开号:US05250679A1
公开(公告)日:1993-10-05
A benzodiazepinedione derivative which acts as a nonpeptidyl platelet aggregation inhibitor is provided. This inhibitor potently inhibits fibrinogen binding to the GPII.sub.b III.sub.a receptor and is provided in therapeutic compositions for the treatment of diseases for which blocking platelet aggregation is indicated. These nonpeptidyl inhibitors are provided in combination with thrombolytics and anticoagulants.
Chemical Modification of the Metal−Carbene Appendage in New, Trimetallic Adducts of Fe<sub>2</sub>(CO)<sub>6</sub>(μ-EE‘) (E = S, Se and E‘ = Se, Te) and Alkynyl Fischer Carbene Complexes (CO)<sub>5</sub>MC(OEt)(C⋮CPh) (M = Cr, W)
作者:Pradeep Mathur、Sundargopal Ghosh、Amitabha Sarkar、C. V. V. Satyanarayana、Vedavati G. Puranik
DOI:10.1021/om970356s
日期:1997.9.1
(CO)6Fe2μ-EC(Ph)CC(OR)(OMe)2E‘} (16−19) (R = CH3, C2H5) were formed. All compounds were characterized by IR and 1H, 13C, 77Se, and 125Te NMR spectroscopies. Crystallographic analysis of the compound Fe2(CO)6μ-SC(Ph)CC(OCH3)2(OC2H5)Te} (17) established its structure as a Fe2STe tetrahedral butterfly core containing the ortho ester unit, C(Ph)CC(OCH3)2(OC2H5)} as a bridge between the two wing-tip chalcogens.
Stereoselective Isomerisation of N-Allyl Aziridines into Geometrically StableZ Enamines by Using Rhodium Hydride Catalysis
作者:Derek S. Tsang、Sharon Yang、France-Aimée Alphonse、Andrei K. Yudin
DOI:10.1002/chem.200701322
日期:2008.1.18
the most likely mechanism of isomerisation would involve a rhodium hydride addition/beta-hydride elimination sequence. We show that the observed selectivity cannot be adequately explained by this pathway and is more consistent with initial CH-activation followed by rearrangement to form a five-membered cyclometallated rhodium intermediate. This intermediate subsequently undergoes reductive elimination
Spectroscopic Evidence for Aminomethylene (H−C̈−NH
<sub>2</sub>
)—The Simplest Amino Carbene
作者:André K. Eckhardt、Peter R. Schreiner
DOI:10.1002/anie.201800679
日期:2018.5.4
and UV/Vis spectroscopic data with ab initio coupled cluster computations. After UV irradiation of the matrix aminomethylene rearranges to its isomer methanimine (formaldimine) H2C=NH. Based on our experimental results and computations aminomethylene has a singlet ground state with a reaction barrier of almost 46 kcal mol−1 to methanimine so that H‐tunneling is excluded.
Tris(allylammonium) Hexabromobismuthate(III) – Crystal Structure, Phase Transitions and Thermal, Dielectric, Vibrational and
<sup>1</sup>
H NMR Properties Over a Range of Temperatures
作者:Iwona Płowaś、Agata Białońska、Grażyna Bator、Ryszard Jakubas、Wojciech Medycki、Jan Baran
DOI:10.1002/ejic.201100832
日期:2012.2
K. The ferroelastic domain structure was observed over one intermediate phase (III) below 215 K. The electric properties of ABB have been measured over a wide temperature range (105–310 K). Low frequency relaxation processes with dielectric increments Δϵ1 ≈ 0.9 and Δϵ2 ≈ 0.05 were observed within phases II and V, respectively. Temperature-dependent vibrational properties of ABB in the frequency region