摘要:
.beta.-phenylisiserine-(2R,3S), salts and preparation thereof through the action of ammonia on .beta.-phenylglycidic-(2R,3R) acid and its use in the preparation of taxane derivatives of general formula: ##STR1## wherein R is hydrogen or --COCH.sub.3 ;and R.sub.1 is phenyl or --O--C(CH.sub.3).sub.3.
摘要:
Disclosed is a compound of formula VII: ##STR1## where Ar represents an optionally substituted phenyl or .alpha.- or .beta.-naphthyl radical; R.sub.3 represents hydrogen, a C.sub.1-4 alkyl radical, a C.sub.2-4 alkenyl radical, an aralkyl radical, or an aryl radical; and R.sub.4 represents hydrogen, a C.sub.1-4 alkyl radical, a C.sub.2-4 alkenyl radical, an aralkyl radical, or an aryl radical; or alternatively R.sub.3 and R.sub.4, together with the carbon atom to which they are linked, form a 4- to 7-membered ring; and R.sub.5 represents an C.sub.1-4 alkyl radical substituted with at least one chlorine atom. The compound of formula VI may be used to manufacture a compound of formula VIII: ##STR2## where Ar, R.sub.3, R.sub.4 and R.sub.5 are defined above; G.sub.1 represents a group protecting the hydroxyl function; and where appropriate, G.sub.2 represents a group protecting the hydroxyl function.
摘要:
Compounds having the formula (I) wherein R and R.sub.1, similar or different, represent a hydrogen or halogen atom or a radical alkyl, alkoxy, amino, acylamino, phenylureido, --N.dbd.CH--N(R.sub.2)R.sub.3, nitro, imidazolyl, phenyl, SO.sub.3 H or cyano; R.sub.2 and R.sub.3 which may be similar or different, represent each an alkyl radical; the invention also relates to the salts of such compounds, their preparation, intermediates for preparing them and drugs containing them. ##STR1##
摘要:
Novel derivatives of 1R- or 1S-2-azabicyclo�2.2.1!heptane with the general formula (I) or (I'), their preparation and their application. ##STR1## In the general formulas (I) and (I'), R represents a hydrogen atom or a group with the formula ##STR2## respectively, in which R.sub.1 represents an alkyl group containing 1-4 carbon atoms and Ar represents an optionally substituted phenyl or .alpha.- or .beta.-naphthyl group. The novel products with the general formula (I) are particularly useful for the preparation of adenosine agonists.
摘要:
This invention relates to an application of an anticonvulsant selected from carbamazepine and oxcarbazepine or the pharmaceutically acceptable salts of said compounds in the preparation of drugs for the treatment of Parkinson's disease and parkinsonian syndromes.
摘要:
The present invention concerns novel polypeptides having NMDA receptor activity and genetic material permitting their expression. It also concerns a method for demonstrating and isolating ligands and/or modulators of the activity of these polypeptides and their utilization as drugs.
摘要:
This invention relates to an optically active hydroquinine (amino-3 phenyl)-1 ethanesulfonate (form A), preparation thereof and its use as an intermediate in the preparation of cholecystokinine and gastrin antagonists.
摘要:
Compounds of formula I ##STR1## wherein the substituents are as defined herein, are disclosed as treatments for disorders linked to CCK and gastrin. Processes for preparing the compounds are also taught.
摘要:
This invention relates to a method for preparing .beta.-phenylisoserine and analogues thereof having general formula (I) ##STR1## from an aromatic aldehyde and an .alpha.-methylarylamine-S, and through a lactam of general formula (II) as described herein. The acids of general formula (I) (R.dbd.H) may be used to prepare taxane derivatives having remarkable antitumoral and antileukaemic activity.
摘要:
This invention relates to the process for the preparation of 2-amino 7-nitro benzothiazoles of formula (I) ##STR1## consisting in a) nitrating a derivative of formula (II) ##STR2## and b) reacting the compound of formula (III) ##STR3## so obtained with caustic ammonia.