摘要:
This invention relates to a new nitration system, and a new method for nitration of aromatic compounds. The nitration system comprises dinitrogen pentaoxide dissolved in an organic solvent, and after having generated an intermediate therein, this reaction mixture is poured into a water solution of a selected nucleophile. The nucleophile preferably comprises a hydrogen sulphite ion, sulphite ion or sulphur dioxide.
摘要:
Compounds which inhibit prenyl transferases, particularly farnysyltransferase and geranylgeranyl transferase I, processes for preparing the compounds, pharmaceutical compositions containing the compounds, and methods of use.
摘要:
Iminooxybenzylcrotonate esters of the formula I ##STR1## where the index and the substituents have the following meanings: n is 0, 1, 2, 3 or 4;R is nitro, cyano, halogen, unsubst. or subst. alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy or in the case where n is 2, additionally an unsubst. or subst. bridge bonded to two adjacent ring atoms;R.sup.1 is C.sub.1 -C.sub.4 -alkyl;R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl;R.sup.3 is hydrogen, cyano, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio or cycloalkyl;R.sup.4 is a 5 to 10-membered mono- or bicyclic, substituted heteroaromatic ring system,processes for their preparation and their use are described.
摘要:
1,8,8-Trifluoro-5,6,7,8-tetrahydroisoquinoline derivatives, and their use in liquid-crystalline mixtures 1,8,8-Trifluoro-5,6,7,8-tetrahydroisoquinoline derivatives of the formula (I)R.sup.1 (--M.sup.1).sub.a (--A.sup.1 --M.sup.2).sub.b (--A.sup.2 --M.sup.3).sub.c --B(--M.sup.4 --A.sup.3).sub.d (--M.sup.5 --A.sup.4).sub.e (--M.sup.6).sub.f --R.sup.2 (I)in which the symbols and indices have the following meanings:the group B is ##STR1## R.sup.1 and R.sup.2 are, for example, alkyl radicals having 1 to 20 carbon atoms;M.sup.1, M.sup.2, M.sup.3, M.sup.4, M.sup.5 and M.sup.6 are, for example, --O--, --CO--O--, --O--CO-- or a single bond;A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene, anda, b, c, d, e and f are zero or one, with the proviso that the sum of b, c, d and e is 0, 1 or 2.The compounds of the formula (I) are colorless in the pure state and generally form liquid-crystalline mesophases in a temperature range which is favorably located for electro-optical use. They are stable chemically, thermally and to light.
摘要:
1-Fluoro-6,7-dihydro-5H-isoquinolin-8-one derivatives of the formula (I)R.sup.1 (--M.sup.1).sub.a (--A.sup.1 --M.sup.2).sub.b (--A.sup.2 --M.sup.3).sub.c --B(--M.sup.4 --A.sup.3).sub.d (--M.sup.5 --A.sup.4).sub.e (--M.sup.6).sub.f --R.sup.2 (I)where B, R.sup.1, R.sup.2, M.sup.1, M.sup.2, M.sup.3, M.sup.4, M.sup.5 M.sup.6, A.sup.1, A.sup.2, A.sup.3, and A.sup.4 are various defined substituents and a, b, c, d, e are zero or one, with the proviso that the sum of b, c, d, and e is 0, 1 or 2, are disclosed. These derivatives are used in liquid-crystalline mixtures.
摘要:
This invention relates to a compound of the Formula IX--C(O)--Y--G--R I(wherein X, Y, G and R have the values defined in the description), or a pharmaceutically acceptable salt thereof, processes and intermediates for the preparation of such a compound or salt, pharmaceutical compositions comprising such a compound or salt and methods of their use as thrombin inhibitors, coagulation inhibitors and agents for the treatment of thromboembolic disorders.
摘要:
A process for producing 2-�3(S)-amino-2-(R)-hydroxyl-4-phenyl butyl!-N-tert,butyl decahydro-(4aS,8aS)-isoquinoline-e(S)-carboxamide of the formula (I) via 3(S)-�lower alkoxy carbonyl amino, phenoxy carbonyl amino or benzyl oxycarbonyl amino!-2-hydroxy-4-phenyl butyric acid and process for producing said acid.