摘要:
The present invention is to provide manufacturing intermediates which can be led to useful α-ketoamide compounds having protease-inhibiting activity extremely economically and stereoselectively, and to provide azide compounds represented by the following formula:
wherein R 1 and R 2 each represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; and processes for preparing α-keto amide compound using the same.
摘要:
An amphiphilic compound is provided capable of forming vesicles or liposomes, said amphiphilic compound having at least one headgroup containing a selectively cleavable group or moiety such as a residue of a choline or phenylalanine derivative, and at least one hydrogen-bonding group located either within said headgroup and/or in close proximity thereto. The cleavable group or moiety is cleaved under selective conditions including change of chemical, physical or biological environment and is preferably cleaved enzymatically in a biological environment such as the brain or the blood. Vesicles or liposomes made from said amphiphilic compounds are suitable for delivery of a therapeutic substance or a diagnostic agent specifically to a target organ or tissue, or for delivery of a nucleic acid for gene therapy.
摘要:
The present invention is to provide manufacturing intermediates which can be led to useful α-ketoamide compounds having protease-inhibiting activity extremely economically and stereoselectively, and to provide epoxycarboxamide compounds, azide compounds and amino alcohol compounds represented by the following formulae:
wherein R 1 and R 2 each represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R 3 represents alkyl group, alkenyl group, aromatic hydrocarbon group, heterocyclic group, R 6 -O- or R 7 -N(R 8 )-; where R 6 represents alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group; R 7 and R 8 each represents hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or heterocyclic group, and, R 4 and R 5 represent the same groups as R 7 and R 8 , respectively, and R 4 and R 5 optionally form a ring together; and X represents -O- or -N(R 9 )-, where R 9 represents hydrogen atom or alkyl group, and X optionally forms a ring together with R 4 or R 5 , and processes for preparing α-keto amide compound using the same.
摘要:
A process for the preparation of an oxirane, aziridine or cyclopropane of formula (I) wherein, X is oxygen, NR?4 or CHR5; R1¿ is hydrogen, alkyl, aryl, heteroaromatic, heterocyclic or cycloalkyl; R2 is hydrogen, alkyl, aryl, heteroaromatic, CO¿2?R?8, CHR14NHR13¿, heterocyclic or cycloalkyl; or R?1 and R2¿ join together to form a cycloalkyl ring; R3 is hydrogen, alkyl, aryl, heteroaromatic, CO¿2R?8, R83Sn, CONR8R9 or trimethylsilyl; R?4 and R5¿ are, independently, alkyl, cycloalkyl, aryl, heteroaromatic, SO¿2R?8, SO3R?8, COR8, CO¿2R?8, CONR8R9¿ or CN, or R4 can also be P(O)(aryl)¿2?; R?8 and R9¿ are independently alkyl, aryl or arylalkyl; R?13 and R14¿ are independently hydrogen, alkyl or aryl; the process comprising reacting a mixture of a compound of formula (II), wherein R1, R2 and X are as defined above, and a sulphide of formula SR6R7, wherein R?6 and R7¿ are independently alkyl, aryl or heteroaomatic, or R?6 and R7¿ join together to form a cycloalkyl ring which optionally includes an additional heteroatom, with either (i) a metallocarbon obtainable by reacting an alkylmetal with a methane derivative of formula CHR3X'X'', wherein R3 is as defined above, and X' and X'' are independently, a leaving group, or (ii) a metallocarbon obtainable by reacting a compound of formula (III), (wherein R3 may not be hydrogen) with a suitable organometallic or inorganic reagent.
摘要:
Cardiac failure remedies containing as the active ingredient indan derivatives represented by general formula (I) or medicinally acceptable salts thereof, wherein R 1 is hydrogen, nitro, cyano, amino, C 1 -C 6 alkylcarbonylamino or the like; R 2 and R 3 are each independently C 1 -C 6 alkyl or the like; R 4 is hydroxyl or C 1 -C 6 alkylcarbonyloxy, or alternatively R 4 together with R 5 represents a bond or oxygen; R 5 is hydrogen, or alternatively R 5 together with R 4 represents a bond or oxygen; R 6 is hydrogen, hydroxyl, NR 7 R 8 or the like; n is an integer of 0 to 4; X is C=O, CH 2 , SO 2 or NR 16 ; when X is C=O, CH 2 or SO 2 , Y is NR 17 , while when X is NR 16 , Y is C=O; when Y is NR 17 , Z is absent, while when Y is C=O, Z is NR 18 ; and W is aryl, a lactam ring or the like.
摘要:
Novel cis-epoxide compounds of formula (I) are useful for treating or preventing diseases caused by HIV infection: wherein A, B, R 1 to R 4 and n have the same meanings as defined in the specification. The novel HIV protease inhibitor of the formula (I) has a specific structure to form a stable bonding with the enzyme active site, which entails a highly enhanced irreversible inhibition against HIV protease.
摘要:
Novel cyclohexane-ylidene derivatives of formula (I) are described. These compounds inhibit the production of Tumor Necrosis Factor and are useful in the treatment of disease states mediated or exacerbated by TNF production. These compounds are also useful in the mediation or inhibition of enzymatic or catalytic activity of phosphodiesterase IV and are therefore useful in the treatment of disease states in need of mediation or inhibition thereof.