A compound of the following formula or a pharmacologically acceptable salt thereof:
1
wherein A represents a phenyl group or the like, B represents an aryl group or the like, X represents an oxygen atom or the like, and n represents 0 or 1. The compound is a PPAR &ggr; modulator which is a therapeutic agent for retrograde osteoporosis in which excessive differentiation of adipocytes is inhibited and formation and differentiation of osteoblasts from stem cells is facilitated, and for diabetes mellitus without characteristics such as excessive adipogenesis, liver dysfunction, vascular disorders, heart diseases and the like.
derivatives as small-molecule Omicron fusion inhibitors with improvedpotency and selectivity index. Particularly, our medicinal chemistry efforts have resulted in a potent, and efficacious lead compound S-10 with appreciable pharmacokinetic properties, which exhibited broad-spectrum potency against Omicron and other variants with EC50 values ranging from 0.82 to 5.45 μM. Mutagenesis studies confirmed that
A novel half-sandwich Co(dppbsa) ([Co]) was synthesized and employed for the catalytic N,N-dimethylation of nitroaromatics with CO2 and hydrosilane. The same catalyst also enabled the highly efficient reduction of nitroaromatics to aromatic amines.
Olefin polymerisation catalysts and processes for producing olefin polymers
申请人:TOSOH CORPORATION
公开号:EP0849292A1
公开(公告)日:1998-06-24
Catalysts for olefin polymerization which consist essentially of a transition metal compound, a modified clay compound and an organic aluminum compound, wherein the modified clay compound comprises a reaction product of a clay mineral and a proton acid salt of a specific amine compound, as well as a method of polymerizing olefins using such catalysts. It is possible thereby to obtain olefin polymers with high productivity and low ash content.