102617-49-2Relevant articles and documents
Steric Effect of Carboxylate Ligands on Pd-Catalyzed Intramolecular C(sp2)–H and C(sp3)–H Arylation Reactions
Tanji, Yutaka,Mitsutake, Naoya,Fujihara, Tetsuaki,Tsuji, Yasushi
, p. 10314 - 10317 (2018/08/06)
A bulky carboxylic acid bearing three cyclohexylmethyl substituents at the α-position, namely, tri(cyclohexylmethyl)acetic acid, is demonstrated to act as an efficient ligand source in Pd-catalyzed intramolecular C(sp2)?H and C(sp3)?H arylation reactions. The reactions proceed smoothly under mild reaction conditions, even at room temperature due to the steric bulk of the carboxylate ligands, which accelerates the rate-determining C?H bond activation step in the catalytic cycle.
ACYLATED AMINO ACIDS AS ENDOTHELIN ANTAGONISTS
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, (2008/06/13)
Novel acylated amino acids which are antagonists of endothelin are described. Methods for their preparation and pharmaceutical compositions containing them are also included. The compounds are expected to be useful in treating elevated levels of endothelin, acute and chronic renal failure, hypertension, myocardial infarction, myocardial ischemia, cerebral vasospasm, cirrhosis, septic shock, congestive heart failure, endotoxic shock, subarachnoid hemorrhage, arrhythmias, asthma, preeclampsia, atherosclerotic disorders including Raynaud's disease and restenosis, angina, cancer, pulmonary hypertension, ischemic disease, gastric mucosal damage, hemorrhagic shock, ischemic bowel disease, diabetes, head injury, and stroke.