摘要:
The present invention provides a method for producing a 12-membered ring macrolide compound expected as a prophylactic or therapeutic agent for solid tumors and the like, and a production intermediate thereof. In detail, by acetalizing hydroxyl groups at 6- and 7-positions of a 12-membered ring macrolide compound being a raw material with dialkyl tin (IV) oxide and, after that, reacting the product with a carbamoyl halide derivative, the 7-position urethane derivative of the 12-membered ring macrolide compound being the target is effectively produced, without protecting hydroxyl groups at other positions.
摘要:
A polypeptide participating in the biosynthesis of pladienolide as a macrolide compound; a DNA coding for such a polypeptide; a variant thereof; a transformant in which part or the whole of such a DNA or variant thereof has been incorporated; and a process for producing pladienolide as a macrolide compound with the use of such a transformant. In particular, there is provided an isolated pure DNA comprising at least one region coding for a polypeptide participating in the biosynthesis of pladienolide. Further, there are provided a polypeptide coded for by this DNA and a recombinant plasmid capable of self-replication or integration replication carrying this DNA. Still further, there are provided a transformant carrying this DNA and a process for producing pladienolide, characterized in that this transformant is cultured in a culture medium and pladienolide is collected from the culture solution.
摘要:
The present invention provides polypeptides that participate in the biosynthesis of the pladienolide macrolide compounds, DNA that encodes these polypeptides and variants of this DNA, transformants that maintain all or a portion of this DNA or variant thereof, and a method of producing the pladienolide macrolide compounds using these transformants. More particularly, it provides an isolated pure DNA that contains at least one region encoding a polypeptide that participates in pladienolide biosynthesis; polypeptide encoded by this DNA; a self-replicating or integrated-replicating recombinant plasmid carrying this DNA; a transformant maintaining this DNA; and a method of producing a pladienolide, characterized by culturing this transformant on culture medium and collecting pladienolide from this culture medium.
摘要:
A cyclovitamin D derivative produced from 25-hydroxyvitamin D is reacted with osmium tetraoxide or a permanganic acid salt to produce a 10,19-diolcyclovitamin D derivative. The 10,19-diolcyclovitamin D derivative is reacted with a perhalogenic acid salt or lead tetraacetate to produce a 10-oxocyclovitamin D derivative. A 1-hydroxycyclovitamin D derivative is produced from the 10-oxocyclovitamin D derivative via a cyclovitamin D derivative and a 1,10-olefincyclovitamin D derivative. The 1-hydrocyclovitamin D derivative is subjected to solvolysis, thereby producing a 1-hydroxy-19-norviatmin D derivative. Thus provided are a novel process for production of 1-hydroxy-19-norcyclovitamin D derivative that is utilizable as an intermediate in the synthesis of 1-hydroxy-19-norvitamin D derivative which is useful as a pharmaceutical agent; and an intermediate for the production.
摘要:
Compounds represented by the following general formula (I), pharmacologically acceptable salts thereof or hydrates of the same: (I) wherein W represents and R 3 , R 7 , R 16 , R 17 , R 20 , R 21 and R 21' are the same or different and each represents hydrogen, etc. Because of inhibiting angiogenesis and inhibiting the production of VEGF particularly in hypoxia, the compounds (I) are useful as remedies for solid cancer.
摘要翻译:由以下通式(I)表示的化合物,其药理学上可接受的盐或其水合物:其中W表示和R 3,R 7,R 16,R 17, R 20,R 21和R 21'均相同或不同,各自表示氢等。由于抑制血管发生并抑制VEGF的产生,特别是在缺氧中,化合物(I)可用作 固体癌治疗。
摘要:
The present invention relates to a compound represented by the formula (I): (wherein, R 3 , R 6 , R 7 and R 21 are the same as or different from one another and each represents a hydroxyl group etc.), a pharmacologically acceptable salt thereof or a hydrate of them. The compound (I) of the present invention suppresses angiogenesis, in particular, suppresses VEGF production in a hypoxic condition and is useful as a therapeutic agent for treating solid cancer.
摘要:
Disclosed are a process for preparation of an optically active 7-substituted 3-(2-aminopropyl)indole compound and an intermediate therefor. In the above preparation process, 7-substituted indole is reacted with L- or DL-serine in the presence of a tryptophan-synthesizing enzyme originating in microorganisms to form corresponding 7-substituted L-tryptophan, and it is subjected, if necessary, to reduction, protection, exchange and elimination.
摘要:
The present invention provides a DNA participating in biological transformation of a macrolide compound 11107B. The present invention provides, paticularly, a DNA participating in biological transformation of a macrolide compound 11107B represented by the formula (I) into a 16-position hydroxy macrolide compound 11107D represented by the formula (II), the DNA encoding a protein having 16-position hydroxylating enzymatic activity or ferredoxin, to a method of isolating the DNA, to a protein encoded by the DNA, a plasmid carrying the DNA, a transformant obtained by transforming using the plasmid and a method of producing a 16-position hydroxy compound by using the transformant.
摘要:
A method of manufacturing a pipecolamide derivative, characterized in that pipecolic acid or an acid salt thereof is reacted with an amine in an inert solvent in the presence of a condensing agent such as dicyclohexylcarbodiimide, 1-ethyl- 2-(2-dimethylaminopropyl) carbodiimide, methanesulfonyl chloride or phosphoryl chloride. Pipecolamide derivatives, particularly in optically active forms thereof can be efficiently and economically manufactured without harmful gas by-products.