Provided is a novel aromatic ring compound having a GPR40 agonist activity and a GLP-1 secretagogue action. A compound represented by the formula:
wherein each symbol is as described in the DESCRIPTION, or a salt thereof has a GPR40 agonist activity and a GLP-1 secretagogue action, is useful for the prophylaxis or treatment of cancer, obesity, diabetes, hypertension, hyperlipidemia, cardiac failure, diabetic complications, metabolic syndrome, sarcopenia and the like, and affords superior efficacy.
Drilling fluid additive and method for inhibiting hydration
申请人:M-I DRILLING FLUIDS COMPANY
公开号:EP0634468A1
公开(公告)日:1995-01-18
This invention relates to drilling fluid additives that suppress clay swelling within a subterranean well and to methods for controlling clay swelling during the drilling of a subterranean well. In one embodiment trihydroxy alkyl amine is reacted with an alkyl halide or a water soluble quaternary amine to form a quaternized trihydroxy alkyl amine. The reaction products can also include condensed reaction products of quaternized trihydroxy alkyl amines. In another embodiment a choline derivative is used. The quaternized reaction products and choline derivatives are characterized by low toxicity and compatibility with anionic drilling fluid components. The products are added to water base drilling fluids which are circulated throughout a well. The drilling fluid additives and the method of controlling clay swelling provide for improved control of the rheological properties of drilling fluids along with increased environmental and drilling fluid compatibility.
[EN] NITROGEN-CONTAINING RING-FUSED COMPOUND, PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] COMPOSÉ À CYCLES CONDENSÉS CONTENANT DE L'AZOTE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 含氮并环化合物、其制备方法及用途
申请人:SICHUAN KELUN BIOTECH BIOPHARMACEUTICAL CO LTD