- 2-n-substituted or unsubstituted-2-amino-5-methylpiperidine-3,4-diols and processes for the preparation thereof
-
This invention relates to (2R,3S,4R,5R)-2-amino-5-methylpiperidine-3,4-diol or a (2S,3S,4R,5R)-2-N-substituted-2-amino-5-methylpiperidine-3,4-diol represented by the general formula (I): wherein R1and R2each are a hydrogen atom, or R1is a hydrogen atom and R2is a lower alkanoyl group or a lower ω-trihaloalkanoyl group, or R1and R2together denote phthaloyl group, and a pharmaceutically acceptable salt thereof. Said compound can be prepared from a (2S,3S,4R)-5-N-protected-2,3,4-O-tri-protected-5-aminopentane-1,2,3,4-tetraol by multi-steps of reactions.
- -
-
-
- Aminopyrazole derivatives
-
Aminopyrazole derivatives represented by formula (I), or salts thereof, wherein X1and X2are each a hydrogen atom or a halogen atom, or X1and X2may be united together to form a lower alkylenedioxy group, Q is a p
- -
-
-
- CIS-SUBSTITUTED FLUOROMETHYLPYRROLIDINE DERIVATIVE
-
An antibacterial drug having potent antibacterial activities upon various bacteria including resistant strains and high safety is disclosed, which comprises as an active ingredient, quinolone derivatives represented by the following formula (I), its salts
- -
-
-
- Tricyclic compounds and drug compositions containing the same
-
Compounds having a β-3 adrenaline receptor agonist and are useful as drugs for the treatment and prevention of diabetes, obesity, hyperlipemia, etc., represented by a general formula (I) and salts thereof, and a process for producing these, and their intermediates, wherein R represents hydrogen or methyl; R1 represents hydrogen, halogen, hydroxy, benzyloxy, amino, or hydroxymethyl; R2 represents hydrogen, hydroxymethyl, NHR3, SO2 NR4 R4', or nitro; R6 represents hydrogen or lower alkyl; and X represents nitrogen, R9 represents hydrogen, one of R7 and R8 represent hydrogen, and the other thereof represents hydrogen, amino, acetylamino, or hydroxy.
- -
-
-
- Pyrimidine derivatives
-
Pyrimidine derivatives useful as a gastrointestinal prokinetic agent, represented by formula STR1 wherein X is O or NR5, Y is O, S or NR5 wherein R5 is a hydrogen atom, a C1 -C6 alkyl group or the like; R1 and R2 may be the same or different and each is a hydrogen atom, a C1 -C6 alkyl group or the like; R3 is CN, or COOR6 wherein R6 is a C1 -C6 alkyl group, a C3 -C6 cycloalkyl group, an aryl group or the like; R4 is --SR7 or --NR8 R9 wherein R7 is a C1 -C6 alkyl group; R8 is a C1 -C6 alkyl group or the like; R9 is a hydrogen atom, a C1 -C6 alkyl group or the like, or R8 and R9 may represent, together with the nitrogen atom to which they are attached, an N-substituted piperazine ring of formula (X) STR2 wherein R10 represents a C1 -C6 alkyl group or the like or a pharmacologically acceptable salt thereof. The above-mentioned compounds are useful as a gastrointestinal prokinetic agent used for the therapy of digestive tract diseases.
- -
-
-
- Steroid derivatives and their use in radioimmunoassays
-
Radiolabeled steroid derivatives having the formula STR1 wherein St is des-hydroxy steroid moiety of (i) a hydroxy steroid intended for radioimmunoassay or (ii) a hydroxy containing derivative of a steroid intended for radioimmunoassay, said derivative ha
- -
-
-
- Steroid derivatives and their use in radioimmunoassays
-
Radiolabeled steroid derivatives having the formula STR1 wherein St is a des-hydroxy steroid moiety of (i) a hydroxy steroid intended for radioimmunoassay or (ii) a hydroxy containing derivative of a steroid intended for radioimmunoassay, said derivative
- -
-
-
- 6-Carboxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine compounds and use as dopaminergic agents
-
A group of 1-phenyl-3-benzazepines with structures characterized by having a carboxy derived substituent at position 6 which are dopaminergic agents or are intermediates for preparing other dopaminergic agents. Particular illustrative species include 6-carbomethoxy-7,8-dihydroxy-3-methyl-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine, 6-carboxy-7,8-dihydroxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine and 6-carbomethoxy-7,8-dihydroxy-1-(4'-hydroxyphenyl)-2,3,4,5-tetrahydro-1H-3-benzazepine.
- -
-
-
- 6-Phenyl-1,2,4-triazolo[4,3-b]pyridazine hypotensive agents
-
This disclosure describes novel substituted 6-phenyl-1,2,4-triazolo[4,3-b]pyridazines useful as hypotensive agents.
- -
-
-