摘要:
The invention relates to a new process for the production of intermediates for the synthesis of caephalosporin of formula (I) wherein R1, R2 and R3, independently of one another, are alkyl, alkenyl, aryl, hydroxy(C1-6)alkyl, carbamoyl-(C1-6)alkyl, amino-(C1-6)alkyl, acylamino-(C1-6)alkyl or carboxy(C1-6)alkyl, or wherein R2 and R3 together with the adjacent nitrogen atom, form an alicyclic 5- to 8-membered heterocyclic ring, and R1 signifies alkyl, alkenyl or aryl. The process according to the invention is notable in that the formation of undesired by-products, especially Δ2-analogous compounds of formula (I), is greatly reduced.
摘要:
A process for the production of a compound of formula ##STR1## wherein R.sup.a denotes hydrogen or silyl;R.sup.b denotes a group of formula --OR.sup.e, whereinR.sup.e denotes hydrogen or alkyl; andR.sup.c and R.sup.d together denote a bond;in free form or in salt form,which process comprises the step of spitting, in the presence of ozone, the double bond in position 3 of the ring structure of a compound of formula III ##STR2## wherein R.sub.2 and R.sub.3 are the same or different and independently of each other denote hydrogen or an organic group, and X.sup.- denotes the anion of an inorganic or organic acid and optionally silylating the amine group in position 7 of the ring system.
摘要:
The invention relates to a new, economical and simple process for the production of 3-vinylcephalosporin compounds of formula ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different and denote hydrogen or an organic radical.
摘要:
A crystalline sodium salt of a compound of formula I (INN: Raltegravir) or a hydrate/solvate thereof is disclosed as well as a process for obtaining the same.
摘要:
A crystalline sodium salt of a compound of formula I (INN: Raltegravir) or a hydrate/solvate thereof is disclosed as well as a process for obtaining the same.
摘要:
The present invention relates to pharmaceutical compositions comprising a pharmaceutically acceptable salt of caspofungin as active ingredient being useful for the prevention and/or treatment of fungal infections. Said compositions additionally comprise specific bulking agents and small amounts or no amounts of an additional pH modifier and may be in a liquid or solid form, e.g. may be lyophilized compositions. Said compositions show good stability and reduced amounts of sub-visible particulate matter formed in solutions which are reconstituted from the lyophilized product.
摘要:
The present invention relates to stable amorphous 3-De[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribohexopyranosyl)oxy]-11,12-dideoxy-6-O-methyl-3-oxo-12,11-[oxycarbonyl[[4-[4-(3-pyridinyl)-1H-imidazol-1-yl]butyl]imino]]erythromycin (telithromycin), methods for the preparation thereof, the use of stable amorphous telithromycin in the treatment of bacterial infections and to pharmaceutical compositions comprising stable amorphous telithromycin.
摘要:
A novel coprecipitate of amorphous rosiglitazone maleate with a pharmaceutically acceptable carrier, e.g. polyvinylpyrolidone, mannitol, lactose, methylcellulose, cyclodextrin or silicon dioxide, a process for the preparation of said novel co-precipitate and the use of said novel coprecipitate of amorphous rosiglitazone with a pharmaceutically acceptable carrier in the treatment and/or prophylaxis of diabetes mellitus, conditions associated with diabetes mellitus and certain complications thereof, are disclosed. A novel solid solution of rosiglitazone maleate with a pharmaceutically acceptable carrier, preferably with polyethylene glycol PEG from 4000 to 40.000 of average mol. wt., a process for the preparation thereof and use are disclosed. A novel coprecipitate of amorphous rosiglitazone maleate with a pharmaceutically acceptable carrier and a novel solid solution of rosiglitazone maleate with a pharmaceutically acceptable inert carrier are stable and may be particularly suitable for bulk preparation, handling and formulation advantages.
摘要:
Azithromycin in the form of a monohydrate comprising from 4.0% to 6.5% of water, a process for its preparation and its use in pharmaceutical compositions.