摘要:
A method of minimizing or reducing the toxicity of a retinoid having a free carboxyl group is described. The method comprises the step of esterifying the carboxyl group of the retinoid with a highly sterically hindered alcohol. The resulting retinoid esters are rendered much less toxic than the starting or parent retinoid. This process provides a retinoid ester analog of reduced toxicity so that it may be administered orally with minimal side effects and with a much greater therapeutic window.
摘要:
A high strength and high ductility low carbon steel product having a tensile strength of 800 MPa or more, a homogeneous elongation of 5 % or more, and an elongation at break of 20 % or more which is produced by a method comprising subjecting an ordinary low carbon steel or an ordinary low carbon steel added with B in an amount being 0.01 % or less and effective for accelerating martensitic transformation to working and heat treatment to prepare a product having roughened austenite crystal grains and then to cooling with water, to provide a steel product having a martensite phase in an amount of 90 % or more, and subjecting the steel product to a low strain working, specifically a cold rolling at a total rolling reduction of 20 % or more and less than 80 %, and to a low temperature annealing at 500 ° C to 600 ° C, to thereby form a hyperfine crystal grain ferrite structure having an average grain diameter of 1.0 µm or less; and a method for producing the steel product.
摘要:
A concentrated bleach-fixer composition for a silver halide color photographic material is disclosed, comprising an aminopolycarboxylic acid iron complex and a thiosulfate, wherein the bleach-fixer composition further comprises at least one compound selected from a phosphate salt, polyphosphate salt, an imidazole compound and a diaminotriazine compound; and the aminopolycarboxylic acid iron complex having a Fe(II) ratio of not less than 50 mol%.
摘要:
Biologically active 19-nor vitamin D analogs substituted at C-2 in the A-ring with an ethylidene group. These compounds have preferential activity on mobilising calcium from bone and either high or normal intestinal calcium transport activity which allows their in vivo administration for the treatment of metabolic bone diseases where bone loss is a major concern. These compounds are also characterised by high cell differentiation activity.
摘要:
Disclosed is a protective layer transfer sheet for forming an image by the method which comprising the steps of overlaying a thermal transfer image receiving sheet and a thermal transfer recording ink sheet, forming an image on the thermal diffusible dye receiving layer by heating, and forming a protective layer on the image by transferring the thermal transferable protective layer unit by heating, in which the thermal transferable protective layer unit is constituted by plural transferable resin layers and at least one of the resin layers contains a metal ion-containing compound and a layer other than the resin layer containing the metal ion-containing compound contains a UV absorbent, and a barrier layer is arranged between the metal ion-containing layer and the UV absorbent containing layer.
摘要:
Disclosed is a developing process on a press of a planographic printing plate material comprising a hydrophilic layer and an image formation layer, which is capable of being developed with water or capable of being developed on a press, the process comprising the steps of (a) supplying dampening water to the planographic printing plate material with a recorded image mounted on a plate cylinder of a press by bringing a dampening roller into contact with the planographic printing plate material while rotating the plate cylinder, and (b) then supplying ink to the planographic printing plate material by bringing an ink roller into contact with the planographic printing plate material to remove an image formation layer unnecessary for printing, wherein in the step (a), the supplied amount of the dampening water is varied.
摘要:
A series of ortho isomers of meso tetrakis N-alkylpyridylporphyrins (alkyl being methyl, ethyl, n-propyl, n-butyl, n-hexyl, and n-octyl) and their Mn(III) complexes were synthesized and characterized by elemental analysis, uv/vis spectroscopy, electrospray ionization mass spectrometry and electrochemistry. An increase in the number of carbon atoms in the alkyl chains from 1 to 8 is accompanied by an increase in: (a) lipophilicity measured by the chromatographic retention factor, Rf; (b) metal-centered redox potential, E1/2 from +220 to +367 mV vs NHE, and (c) proton dissociation constant, pKa2 from 10.9 to 13.2. A linear correlation was found between E1/2 and Rf of the Mn(III) porphyrins and between the pKa2 and Rf of the metal-free compounds. As the porphyrins become increasingly more lipophilic, the decrease in hydration disfavors the separation of charges, while enhancing the electron-withdrawing effect of the positively charged pyridyl nitrogen atoms. Consequently, the E1/2 increases linearly with the increase in pKa2, a trend in porphyrin basicity opposite from the one we previously reported for other water-soluble Mn(III) porphyrins. All of these Mn(III) porphyrins are potent catalysts for superoxide dismutation (disproportionation). Despite the favorable increase of E1/2 with the increase in chain length, the catalytic rate constant decreases from methyl (log kcat = 7.79) to n-butyl, and then increases such that the n-octyl is as potent an SOD mimic as are the methyl and ethyl compounds. The observed behavior originates from an interplay of hydration and steric effects that modulate electronic effects.
摘要:
2-benzylaniline can be manufactured in one-pot reaction at a substantially reduced cost by allowing 2-amino-5-halogenobenzophenone to react under a reductive condition.
摘要:
A production method of a porous medium comprising a non-water-absorptive support and a porous layer provided on the support is disclosed. The method includes steps of, applying Water-based Composition A comprising inorganic microparticles of an average primary particle diameter of less than or equal to 30 nm, a hydrophilic binder and water onto the support to form a coated layer, drying the coated layer to form the porous layer, and applying Water-based Composition B onto the porous layer, and the Water-based Composition A further comprises a compound represented by Formula.
摘要:
This invention discloses (20S)-1α-hydroxy-2α-methyl-19-nor-vitamin D3 and (20S)-1α-hydroxy-2β-methyl-19-nor-vitamin D3 and pharmaceutical uses therefor. These compounds exhibit pronounced activity in arresting the proliferation of undifferentiated cells and inducing their differentiation to the monocyte thus evidencing use as an anti-cancer agent and for the treatment of skin diseases such as psoriasis as well as skin conditions such as wrinkles, slack skin, dry skin and insufficient sebum secretion. These compounds also have very significant calcemic activity and therefore may be used to treat immune disorders in humans as well as metabolic bone diseases such as osteoporosis.