摘要:
A process for the preparation of (+)-2-amino-bicyclo[3.1.0]-hexane-2-6-dicarboxylic acid, or a pharmaceutically acceptable salt thereof, which comprises hydrolysing (-)-2-spiro-5'-hydantoinbicyclo[3.1.0]hexane-6-carboxylic acid or a salt thereof, and optionally forming a pharmaceutically acceptable salt. Also disclosed are novel intermediates useful in the process.
摘要:
A process for preparing a 5-arylhydantoin having the formula (II):
which comprises: reacting methyl 2-hydroxy-2-methoxyacetate, urea and an aryl compound having the formula (I):
in the presence of an acid. According to the process, the 5-arylhydantoin which is a very effective intermediate for preparing D-arylglycines can be easily prepared from the unexpensive raw materials in a high purity.
摘要:
Antidepressant agents having the formula wherein R 1 is a polycycloalkyl group; R 2 is methyl or ethyl, X is O or NH; and Y comprises a 5- or 6-membered heterocyclic ring having one or two nitrogens; or fused bicyclic heterocyclic rings having a total of three nitrogen atoms, one in each ring and one angular nitrogen.
and their pharmaceutically acceptable (including acid- addition) salts, which are novel, are antagonists of leukotrienes of C 4 , D 4 and E 4 , the slow reacting substance of anaphylaxis. They can be made into pharmaceutical compositions by incorporating them in a pharmaceutical carrier. In the formulae, each R is H, OH, SH, C 1-8 alkyl, C 2-8 alkenyl, CF 3 , C 1-8 alkoxy, C 1-8 alkylthio, phenyl, phenyl having C 1-3 alkyl or halogen substitution, phen (C 2-4 alkyl), halogen, amino, N(R 4 ) 2 , COOR 4 or CH 2 OR 4 where R 4 is H or C 1-8 alkyl, formyl, CN, CF 3 S or NO 2 ; each R' is R 4 ; OR 4 ; COOR 4 ; N(R 4 ) 2 ; SR 4 ; CH 2 OR 4 orCHO; , or together R' and R' are 0, CH 2 or Y is oxyge, sulfur, sulfoxide, sulfone, = NR 12 , = N - CO - R 13 or - N - CN, where R 11 is C 1-4 alkyl, R 12 is H or C 1-4 atkyl and R 13 is C 1-4 alkyl or C 1-4 alkoxy;
Y' is Y, each R 1 is hydrogen or C 1-3 alkyl; each m is an integer from 0 to 6; R 2 is where Z is O. S, CH 2 , H and OH, C 1-4 alkenyl, or = N - R 14 , where R 14 is OH, CN, COOH, halogen, formyl, C 1-8 acyl, C 1-8 alkyl, C 1-8 alkoxy, C 1-8 halogenated alkyl, phenyl, or phenyl having C 1-3 alkyl or C 1-3 alkoxy substitution; each R e is H or C 1-4 alkyl; each R 7 is H, OH or C 1-4 alkyl; each R 8 is H or C 1-4 alkyl and is absent when the two indicated carbons are triply bonded; R 5 is COOR 4 ; CH 2 OH; CHO; tetrazole; NHSO 2 R 14 ; CON-HSO 2 R 14 hydroxymethylketone; CN; CON(R 7 ) 2 ; a monocyclic or bicyclic heterocyclic ring containing an acidic hydroxyl group; or COOR 15 where R 15 is: where each s is independently 0-3, R 6 is as defined above and R 16 is
(A) a monocyclic or bicyclic heterocyclic radical containing from 3 to 12 nuclear carbon atoms and 1 or 2 N heteroatoms or one N and one S heteratom, each ring in the heterocyclic radical being formed of 5 or 6 atoms, or (B) W-R 17 where W is O, S or NH and R 17 contains up to 21 carbon atoms and is (1) a hydrocarbon radical or (2) an acyl radical or an organic acyclic or monocyclic carboxylic acid containing not more than 1 heteroatom in the ring;
each of r and q is 0-20 but r + q does not exceed 20; and p is 0 or 1; R 3 is C 1-6 alkyl or C 3-8 alkenyl; R 9 is C 1-8 alkyl, C 1-8 alkoxy or (CH 2 ) r R 5 , where r and R s are as defined above: and R 10 is H, C 1-8 alkyl; R 4 CO- or R 4 OCH 2 , where R 4 is as defined above.
The compounds are prepared by condensing together two compounds having appropriately substituted benzene rings, one of which contains a halogen atom in the chain containing Y and Y', which removes a hydrogen atom from the ring of the other compound.
摘要:
Die Erfindung betrifft neue Cycloalkan-5'-spirohydantoine der Formel die in der Beschreibung erläutert wird. Es werden ferner Verfahren zur Herstellung der neuen Verbindungen beschrieben sowie die Verwendung der Verbindungen zur Bekämpfung unerwünschten Pflanzenwachstums.
摘要:
Monomeric, dimeric and polymeric allantoinformal- dehyde condensation products, especially imidazolidinyl urea and diazolidinyl urea, have been found to be therapeutically effective in the treatment of humans and animals, especially in the treatment of diseases and malconditions of the skin and other membranes. The compounds have the advantages of water-solubility, low toxicity, low irritancy and broad action, which is a combination of properties not found in many drugs. The compounds may be used in a wide variety of compositions and formulations.
摘要:
Die Erfindung betrifft ein neues Verfahren zur Herstellung von Hydantoinringe enthaltenden Verbindungen durch Umsetzung eines Carbodiimids mit einem Derivat einer a,ß-ungesättigten Carbonsäure der Formel in welcher R 3 , R 4 und R 5 die in der Beschreibung angegebene Bedeutung haben.