Acylsulfonamide-containing PTP1B inhibitors designed to mimic an enzyme-bound water of hydration
摘要:
Previously, it had been reported that 6-(phosphonodifluoromethyl)-2-naphthoic acid binds to the protein-tyrosine phosphatase PTP1B with its 2-carboxyl group interacting only indirectly through a bridging water molecule. Reported herein is a family of new analogues that utilize acylsulfonamido functionality both to mimic this water of hydration and to provide an additional new site for elaboration not found in the parent carboxyl-containing analogue. Target acylsulfonamides were prepared in two steps from commercially available primary sulfonamides, which were selected based on in silico screening for their potential ability to interact with one of three binding surfaces proximal to the PTP1B catalytic site. In general, modest potency enhancements were observed. Arylacylsulfonamides represent a structure-based extension of inhibitor design that may have broader utility in the development of PTP1B inhibitors. (C) 2003 Elsevier Ltd. All rights reserved.
[EN] PHARMACEUTICAL COMPOSITIONS WITH IMPROVED DISSOLUTION<br/>[FR] COMPOSITIONS PHARMACEUTIQUES A DISSOLUTION AMELIOREE
申请人:TRANSFORM PHARMACEUTICALS INC
公开号:WO2004000284A1
公开(公告)日:2003-12-31
The invention relates to methods of screening mixtures containing a pharmaceutical compound an excipient to identify properties of the pharmaceutical compound/excipient combination that retard solid-state nucleation. The invention further relates to increasing the solubility, dissolution and bioavailability of a drug with low solubility in gastric fluids conditions by combining the drug with a recrystallization/precipitation retardant and an optional enhancer.
Pharmaceutical compositions with improved dissolution
申请人:Tawa Mark
公开号:US20060134198A1
公开(公告)日:2006-06-22
The invention relates to methods of screening mixtures containing a pharmaceutical compound and an excipient to identify properties of the pharmaceutical compound/excipient combination that retard solid-state nucleation. The invention further relates to increasing the solubility, dissolution and bioavailability of a drug with low solubility in gastric fluids conditions by combining the drug with a precipitation retardant and an optional enhancer.
A pharmaceutical oral controlled release multiple-units formulation in which the individual units comprise coated units containing an active substance which is subject to controlled release as a result of coating of the units with a water-insoluble, but water-diffusable controlled release coating, the units additionally comprising particles of an active substance adhered to the surface of the controlled release coating in a substantially uniform layer, the particles being at least one power of ten smaller than the coated units. The active substance in the units may be potassium chloride, and that adhered to the surface of the controlled release coating may be a diuretic.