摘要:
A crystalline anthracycline antibiotic having a specified characteristic 2υ value according to powder X-ray diffractometry and being excellent in chemical and physical properties; and a process for producing the crystal involving the step of crystallization from a combination of a specified poor solvent therefor and a good solvent.
摘要:
The present invention provides a method of preventing, curing, and/or treating hypocalcemia of a domestic mammal, especially, a cow. Specifically, the present invention provides a method of administrating a vitamin D derivative to prevent, cure and/or treat hypocalcemia, characterized in that a vitamin D derivative, especially, 1α-hydroxyvitamin D 3 and/or 1.25-dihydroxyvitamin D 3 is transvaginally administered to a domestic mammal.
摘要:
If a cancer cell sampled from a cancer patient by biopsy or the like can be examined with respect to its expressed molecules to evaluate sensitivity of the cancer cell to the present compound, the present compound can be selectively administered only to the cancer patient who is expected to benefit from antitumor activity of the present compound, thereby to enhance the therapeutic effect and reduce unnecessary adverse effects. Specifically, the characteristics of a cancer cell with respect to "low level expression of pRB", "positive expression of p16" and "high level expression of cyclin E" are demonstrated to be useful as markers for sensitivity of the cancer cell to the present compound. Therefore, these characteristics of a cancer cell can be examined to evaluate previously sensitivity of the cancer cell to the present compound.
摘要:
The present invention provides a novel method of producing the 12-membered ring macrolide compound 11107D having an antitumor activity by biological transformation. Starting material which is the 12-membered ringmacrolide compound 11107B represented by the formula (I) is incubated in the presence of a strain belonging to the genus Mortierella, the genus Streptomyces or the family Micromonosporaceae (for example, Streptomyces sp. AB-1704 strain (FERM BP-8551)), each of which has the ability of transforming the 12-membered ring macrolide compound 11107B into a 11107D substance represented by the formula (II), or a preparation of its cultured mycelia and oxygen, and then 11107D substance which is a target material is collected from the treating solution.
摘要:
A compound represented by the following general formula (I): (I) wherein R 7 and R 21 are the same or different and each represents optionally substituted C 2-22 alkoxy, etc.; a pharmaceutically acceptable salt thereof or hydrates of the same. The compound (1) inhibits angiogenesis and inhibits the production of VEGF particularly under hypoxic conditions, which makes it useful as a remedy for solid cancer.
摘要:
A method of preparing optically active isocoumarin-3-yl-acetic acid derivatives represented by Formula (I): wherein a specific isocoumarin-ketene derivative is subjected to an addition reaction with an optically active alcohol, and then the ester thus obtained is subjected to a hydrolysis reaction. An intermediate for synthesis used therein. A method of preparing isocoumarin-3-yl-acetic acid derivatives represented by Formula (III): wherein a specific isocoumarin derivative is subjected to an addition reaction with carbon monoxide and oxygen in the presence of a transition metal catalyst. An intermediate for synthesis used therein.
摘要:
The present invention provides a novel bioactive substance having an antiangiogenic effect. The chemical compound represented by the formula (1): (wherein, R 1 represents hydrogen atom, aldehyde group or a lower acyl group, R 2 and R 3 are the same as or different from each other and represent hydrogen atom or a lower alkoxy group or are combined to represent oxygen atom, R 4 represents a lower alkyl group and R 5 represents hydrogen atom or a lower alkyl group, provided that compounds in which R 1 is aldehyde group, R 2 and R 3 are different from each other and are hydrogen atom or methoxy group, R 4 is ethyl group and R 5 is hydrogen atom are excluded), a salt thereof or a hydrate thereof was isolated from the culture broth of genus Streptomyces and the structure thereof was analyzed.
摘要:
Disclosed are a crystalline form of anthracycline antibiotic having specific characteristic 2θ values as measured by the X-ray diffraction method, and a process for producing the crystalline form. This process comprises the step of crystallization involving the combined use of a specific poor solvent for the antibiotic and a good solvent therefor. This crystalline form has excellent chemical and physical properties.