摘要:
Isoprene derivatives of formula (I) ##STR1## wherein m is an integer of 0 to 3, n is an integer of 5 to 12, A is cyclo(C.sub.3 -C.sub.6)alkylene, phenylene, fluorenylene, pyrrolidinylene, piperazinylene, 9-aza-3-oxabicyclo�3.3.1!-nonylene, R.sub.1 and R.sub.2 are each independently benzyl, of which a phenyl ring may be substituted by 1 to 5 substituents selected from the group consisting of hydroxy, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy and halogen, X is a single bond or a divalent radical of --(CH.sub.2).sub.p NH--, p is an integer of 0 to 3, or a pharmaceutically acceptable salt thereof. Those compounds are useful as multidrug resistance inhibitors for overcoming multidrug resistance of cancer and agents for enhancing an activity of anti-cancer agents.
摘要:
This invention relates to a medicament containing as an active ingredient, a novel propanolamine having a 1,4-benzodioxane ring or a pharmaceutically acceptable salt thereof: The present compound is represented by the above formula wherein R1-3 may be the same or different and each represents a hydrogen atom, a halogen atom, a hydroxy group, a (C1–C6)alkyl group, a (C1–C6)alkoxy group, a (C1–C6)alkylsulfonamido group, or a phenyl group; R4-5 each represents a hydrogen atom or a (C1–C6)alkyl group; and A represents any of a benzene ring, a pyridine ring and a pyrimidine ring.This compound is useful as a prophylactic or therapeutic agent for diabetes, obesity, hyperlipemia, depression, a respiratory disease, or a gastrointestinal disease.
摘要:
Depsipeptides represented by the formula (1): (wherein: R1 is a straight or branched alkyl group of 5-20 carbon atoms or a straight or branched alkoxymethyl group of 5-15 carbon atoms; R2 is —A—B, —A—B—W, —A—B—W—D or —A—B—W—D—E, R3 is a hydroxyl group, a lower alkoxy group, a benzyloxy group, —Z, —Z—G or —Z—G—J, the above A, B, D, E, G and J independently each other are a residue of an amino acid selected from alanine, valine, leucine, isoleucine, serine, threonine, lysine, hydroxylysine, arginine, cysteine, methionine, phenylalanine, tyrosine, aspartic acid, asparagine, glutamic acid, glutamine and the like or an N—(C1-C4) alkyl derivative of these amino acid residues; the above W and Z independently each other are a residue of an amino acid selected from aspartic acid, asparagine, glutamic acid, glutamine, alanine, serine or lysine) or pharmacologically acceptable salts thereof. The depsipeptides have an activity of promoting the production of apolipoprotein E and are useful as a therapeutic agent for neurologic damages, especially for dementia, and further as a therapeutic agent for hyperlipemia.
摘要:
A depsipeptide containing N-substituted glycine residue having the formula (1) or (2): (wherein R1 is a straight or branched alkyl group of 5-20 carbon atoms or a straight or branched alkoxymethyl group of 5-15 carbon atoms; R2 is a group of the formula —A—B—W—(D)m—(E)n, —A—B—W—(D)m—(E)n—F or —A—B—W—(D)m—(E)n—F—Z; R3 is a hydroxyl group, a lower alkoxy group, a benzyloxy group, or a group of the formula —Z, —Z—G or —Z—G—J; A, B, D, E, F, G and J independently are an N-substituted glycine residue or a residue of an amino acid selected from the group consisting of alanine, valine, leucine, serine, etc.; W and Z independently are a residue of an amino acid selected from the group consisting of an aspartic acid, a glutamic acid, etc.; at least one of A, B, D, E, F, G and J is an N-substituted glycine residue) or a pharmacologically acceptable salt thereof. The above depsipeptides have a promoting activity on the production of apolipoprotein E, and are useful as a therapeutic agent for neurologic damages, especially dementia, and hyperlipemia.
摘要:
There is disclosed a multidrug resistance inhibitor for overcoming a multidrug resistance of cancer, or an agent for enhancing the activity of anti-cancer agents, which comprises as an active ingredient a compound of formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein n is an integer of 5 to 12,R.sub.1 and R.sub.2 are each independently benzyl, of which a phenyl ring may be substituted by 1 to 5 substituents selected from hydroxy, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy and halogen, and/or by methylenedioxy, with the proviso that R.sub.1 and R.sub.2 are simultaneously not a compound of formula (II) ##STR2##
摘要:
A depsipeptide containing N-substituted glycine residue having the formula (1) or (2): ##STR1## (wherein R.sub.1 is a straight or branched alkyl group of 5-20 carbon atoms or a straight or branched alkoxymethyl group of 5-15 carbon atoms; R.sub.2 is a group of the formula --A--B--W--(D).sub.m --(E).sub.n, --A--B--W--(D).sub.m --(E).sub.n --F or --A--B--W--(D).sub.m --(E).sub.n --F--Z; R.sub.3 is a hydroxyl group, a lower alkoxy group, a benzyloxy group, or a group of the formula --Z, --Z--G or --Z--G--J; A, B, D, E, F, G and J independently are an N-substituted glycine residue or a residue of an amino acid selected from the group consisting of alanine, valine, leucine, serine, etc.; W and Z independently are a residue of an amino acid selected from the group consisting of an aspartic acid, a glutamic acid, etc.; at least one of A, B, D, E, F, G and J is an N-substituted glycine residue) or a pharmacologically acceptable salt thereof.The above depsipeptides have a promoting activity on the production of apolipoprotein E, and are useful as a therapeutic agent for neurologic damages, especially dementia, and hyperlipemia.