摘要:
Disclosed are compounds of formula I ##STR1## wherein R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group, benzyl or an indolyl carbonyl group, R.sub.2 is a saturated or unsaturated 5- or 8-membered heterocyclic group containing as a hetero atom one or more nitrogen atoms, the heterocyclic group is optionally substituted at an N or C atom by a C.sub.1 -C.sub.6 alkyl or aralkyl group, n is an integer of 1 to 5 and one or more hydrogen atoms, in an alkylene chain --(CH.sub.2).sub.n -- are optionally substituted by a C.sub.1 -C.sub.6 alkyl, phenyl and/or hydroxyl group, physiologically acceptable salts and quaternary ammonium salts thereof. The compounds are selective antagonists of 5-HT.sub.3 receptors and are useful in the treatment of psychotic disorders, neurotic diseases, gastric stasis symptoms, gastrointestinal disorders, nausea and vomiting.
摘要:
Azabicyclo derivatives of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein A is a group of formula (a), (b) or (c): ##STR2## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.10 alkyl, aralkyl or di(C.sub.1 -C.sub.4) alkylamino(C.sub.1 -C.sub.6)alkyl;R.sub.2, R.sub.3 and R.sub.4 may be the same or different and each is hydrogen, amino, halogen, C.sub.1 -C.sub.4 alkoxy or phthalimide; X is O or NH;R is C.sub.1 -C.sub.4 alkyl; andY is NR, O or S;having 5-HT.sub.3 receptor antagonist activity.
摘要:
Azabicyclo derivatives of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein A is a group of formula (a), (b) or (c): ##STR2## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.10 alkyl, aralkyl or di(C.sub.1 -C.sub.4) alkylamino(C.sub.1 -C.sub.6)alkyl;R.sub.2, R.sub.3 and R.sub.4 may be the same or different and each is hydrogen, amino, halogen, C.sub.1 -C.sub.4 alkoxy or phthalimide;X is O or NH;R is C.sub.1 -C.sub.4 alkyl; andY is NR, O or S;having 5-HT.sub.3 receptor antagonist activity.
摘要:
Cyclic depsipeptides represented by the formula wherein: R is a straight or branched alkyl group of 5-20 carbon atoms or a straight or branched alkoxymethyl group of 5-15-carbon atoms; A, B, D, E and F independently each other are alanine, valine, leucine, isoleucine, phenylalanine, etc.; W and Z independently each other are aspartic acid, asparagine, glutamic acid or glutamine; and m and n independently each other is 0 or 1, or pharmacologically acceptable salts thereof. The present compounds are prepared according to a method conventionally used in peptide synthesis. The present compounds are useful as an agent for promoting the production of apolipoprotein E, a therapeutic agent for neurologic damages, a therapeutic agent for dementia, an agent for inhibiting the production of apolipoprotein B, an agent for promoting the production of apolipoprotein A1 or a therapeutic agent for hyperlipemia.
摘要:
The present invention provides a bicyclic depsipeptide having the formula (1) wherein: R is a straight or branched alkyl group of 5-20 carbon atoms or a straight or branched alkoxymethyl group of 5-15 carbon atoms; A, D, E and J independently are a residue of an amino acid selected from the group of alanine, valine, leucine, etc.; B and F are the same or different and a residue of an amino acid selected from the group consisting of cysteine, aspartic acid, glutamic acid, lysine, hydroxylysine and serine; G is a disulfide bond, an amido bond or an ester bond; W is a residue of an amino acid selected from the group consisting of aspartic acid and glutamic acid; Z is a residue of an amino acid selected from the group consisting of aspartic acid, asparagine, glutamic acid and glutamine; l, m, n, p and q independently are 0 or 1; or a pharmacologically acceptable salt thereof.
摘要:
A flash device in which a mechanism for shifting a light emitting section up and down and a mechanism for changing over the light distribution angle can be automatically controlled by means of a single motor and which occupies a comparatively small spacing when mounted on a camera. The flash device includes a bidirectional drive motor mounted in a body member, and a shiftable member having the light emitting section thereon. The shiftable member is shifted by rotation of the motor in either direction between a retracted inoperative position and a projected operative position. The light distribution angle of the light emitting section is changed over by continued energization of the motor after the shiftable member is moved from the inoperative to the operative position. A friction mechanism is interposed in a motion transmitting mechanism from the motor to the shiftable member. The motor and the motion transmitting mechanism are disposed at a location within the body member at which they are located, when mounted on a camera, above a spacing sidewardly of a central portion of the camera in which a pentagonal prism is disposed.
摘要:
A depsipeptide containing a non-natural amino acid(s) having the formula (1) wherein R1 represents a C5-C20 alkyl group and others; R2 represents —O—CO—CH(R5)—X—CH(R6)—NH— (wherein X represents N(R7)—CO, CH2—CO, CH2—CH2 and others, R5, R6, and R7 represent a hydrogen atom or a C1-C6 alkyl group); R3 represents and wherein the remaining substituent variables are as defined herein. 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:
Disclosed are optically active alcohols having formula (1) and (2) wherein R is (R)-1-phenylethylamino or (S)-1-phenylethylamino. The active alcohols can be prepared by acylating a racemate of formula (3) in the presence of a hydrolase, followed by alcoholysis or hydrolysis. R in formula (3) is the same as that defined for formula (1) and (2).
摘要:
The present invention provides a new depsipeptide derivative having a piperazinone ring within the molecule which is represented by formula (1) wherein X1 represents N(R4)—CO, N(R5)—CH2, CH2—CO, CH2—CH2, CH═CH, CH2—CH(OH) or CH(OH)—CH(OH), R1 represents a C5-C20 alkyl group or a C5-C15 alkoxy C1-C4 alkyl group, R2-R5 represent a hydrogen atom or a C1-C6 alkyl group, and A represents a group of formula (2), (3) or (4) The depsipeptide derivative has a function of accelerating the production of apolipoprotein E and is useful as an agent for the treatment of neurologic injury, an agent for the treatment of dementia and an antihyperlipidemic agent.