摘要:
A process for producing a compound represented by Formula (11): wherein P1, P7, P8, P9 and R1 are the same as defined herein, characterized by including reacting a compound represented by Formula (12): with a compound represented by Formula (13): in the presence of a catalyst.
摘要:
Process for producing compound of Formula: wherein P2, P3 and R2 are the same as defined below, characterized by comprising reacting a compound represented by Formula (7): wherein P3 means a protecting group for hydroxy group; and Het means a 1-phenyl-1H-tetrazol-5-yl group, with a compound represented by Formula (8): wherein P2 means a protecting group for hydroxy group; and R2 means a phenyl group which may be substituted, in the presence of a base.
摘要:
Process for producing compound of Formula: wherein P2, P3 and R2 are the same as defined below, characterized by comprising reacting a compound represented by Formula (7): wherein P3 means a protecting group for hydroxy group; and Het means a 1-phenyl-1H-tetrazol-5-yl group, with a compound represented by Formula (8): wherein P2 means a protecting group for hydroxy group; and R2 means a phenyl group which may be substituted, in the presence of a base.
摘要:
[Problems to be Solved]To provide an effective process for total synthesis of pladienolide B and pladienolide D having excellent anti-tumor activity and to provide useful intermediates in the above-described process. [Measure for Solving the Problem]A process for producing a compound represented by Formula (11): wherein P1, P7, P8, P9 and R1 are the same as defined below, characterized by including reacting a compound represented by Formula (12): wherein P7 means a hydrogen atom or a protecting group for hydroxy group; R1 means a hydrogen atom or a hydroxy group, with a compound represented by Formula (13): wherein P1 means a hydrogen atom or a protecting group for hydroxy group; P8 means a hydrogen atom, an acetyl group or a protecting group for hydroxy group; P9 means a hydrogen atom or a protecting group for hydroxy group; or P8 and P9 may form together a group represented by a formula: wherein R5 means a phenyl group which may have a substituent, in the presence of a catalyst.
摘要:
The present invention provides a novel bioactive substance having an antitumor activity and a process for producing it, and a medical use thereof. Namely, it provides a 12-membered ring macrolide compound represented by the following formula obtained from the incubation solution of Streptomyces sp. Mer. 11107 or a variant thereof, a pharmacologically acceptable salt thereof or a hydrate of them, and a process for producing it.
摘要:
The present invention provides a novel bioactive substance having an antitumor activity and a process for producing it, and a medical use thereof. Namely, it provides a 12-membered ring macrolide compound represented by the following formula obtained from the incubation solution of Streptomyces sp. Mer. 11107 or a variant thereof, a pharmacologically acceptable salt thereof or a hydrate of them, and a process for producing it.
摘要:
The present invention provides a novel bioactive substance having an antitumor activity and a process for producing it, and a medical use thereof. Namely, it provides a 12-membered ring macrolide compound represented by the following formula obtained from the incubation solution of Streptomyces sp. Mer. 11107 or a variant thereof, a pharmacologically acceptable salt thereof or a hydrate of them, and a process for producing it
摘要:
The invention provides novel ligands for transition metal complexes which exhibit high coordination power with respect to metals by being free of substituents at the positions ortho to phosphorus or arsenic and which have electron-withdrawing power comparable to the highest level known in conventional ligands. A ligand of the invention includes a compound represented by General Formula (1): R1R2R3A or General Formula (2): R1R2A-Y-AR3R4 and having a total of 15 to 110 carbon atoms. In the formulae, A is phosphorus or arsenic; R1, R2, R3 and R4 are each independently a substituted pyridyl group having optionally different electron-withdrawing groups bonded to the positions meta to the atom A as well as hydrogen atoms bonded to the positions ortho to the atom A; and Y is a divalent group derived from a C2-20, optionally substituted and optionally heteroatom-containing, aliphatic, alicyclic or aromatic compound or from ferrocene.
摘要翻译:本发明提供了用于过渡金属配合物的新型配体,其通过在磷或砷邻位置没有取代基而具有相对于金属的高配位力,并且具有与常规配体中已知的最高水平相当的吸电能力。 本发明的配体包括由通式(1)表示的化合物:R1R2R3A或通式(2):R1R2A-Y-AR3R4,总共具有15至110个碳原子。 在配方中,A是磷或砷; R 1,R 2,R 3和R 4各自独立地为具有与位于原子A的位置键合的任意不同的吸电子基团的取代的吡啶基以及与原子A的邻位键合的氢原子; 并且Y是衍生自C2-20,任选取代的和任选地含杂原子的脂族,脂环族或芳族化合物或二茂铁的二价基团。
摘要:
Disclosed is an organic-inorganic composite material obtained by chemically modifying a microorganism-derived ceramic material with an organic group, and a process for producing the organic-inorganic composite material. The process is characterized by reacting a microorganism-derived ceramic material with at least one compound selected from the group consisting of silane coupling agents represented by formula (1), silane coupling agents represented by formula (2), and titanate coupling agents represented by formula (3). The organic-inorganic complex can be used in applications for immobilized catalysts and immobilized enzyme catalysts.
摘要:
In the production of a bonded wafer by bonding a silicon wafer for active layer with an internal oxide film to a silicon wafer for support layer directly or indirectly with an insulating layer to form a silicon wafer composite and removing an upperlayer-side silicon portion and the internal oxide film of the silicon wafer composite to leave only an active layer with a given thickness, the active layer forming step is conducted only by polishing under given conditions.