摘要:
Disclosed are a phenol compound represented by the formula (1): ##STR1## wherein R.sup.0 represents H, alkyl or alkyloxy; R.sup.1 represents alkyl; R.sup.2 represents alkyl or alkyloxy; OR.sup.3 represents OH; R.sup.4 represents H, lower alkyl or acyl, each of the above substituents may be substituted; W represents O, S or NR.sup.7 ; where R.sup.7 represents H, alkyl, aryl, OH or alkyloxy, a group of the formula (2): ##STR2## represents an amino which may be mono- or di-substituted or heterocyclic group containing N atom, or a pharmaceutically acceptable salt thereof, and a process for preparing the same.
摘要:
2.2. 1,3-imidazolidine-4-ones having the General Formula: ##STR1## are obtained in a pure form especially by means of precipitation, in which production an optically active acid can be used at 0.5-0.8 eq. for the separation of racemates. The non-desired enantiomer can be racemized in an inert solvent and the cyclization to imidazolidinone can take place by means of the optically active acid, whereupon the separation of racemates takes place directly thereafter. 1,3-imidazolidine-4-ones are valuable educts for the preparation of branched or unbranched, proteinogenic or non-proteinogenic .alpha.-amino acids by means of diastereoselective alkylation and subsequent ring splitting.
摘要:
Novel hydroxamic acid and derivatives of formula (I)Ar--(L--Ar').sub.q --(X).sub.k --(Y).sub.p --Q (I)are disclosed. Also described are their preparation, compositions containing them and their use.
摘要:
Compounds of the formula ##STR1## are disclosed. These compounds are useful as hypotensive agents due to their angiotensin converting enzyme inhibition activity and depending upon the definition of X may also be useful as analgesics due to their enkephalinase inhibition activity.
摘要:
N-chloro and N-bromo derivatives of 2-imidazolidinones having substituents at the 4 and 5 positions of the ring are described. More particularly, there are described dichloro, dibromo-, and chlorobromo- derivatives of 2-imidazolidinones having at least three substituents selected from alkyl, alkoxy, hydroxy and substituted phenyl, e.g., para-substituted phenyl, at the 4 and 5 positions on the ring. These N-halo compounds are biocides, e.g., bactericides, and are useful as disinfectants and sanitizers.
摘要:
Compounds of the formula ##STR1## are disclosed. These compounds are useful as hypotensive agents due to their angiotensin converting enzyme inhibition activity and depending upon the definition of X may also be useful as analgesics due to their enkephalinase inhibition activity.
摘要:
A process for the manufacture of 1-(2-alkoxyethyl)-4-phenyl-4-imidazolin-2-ones, 1-(2-alkoxyethyl)-4-phenyl-2-imidazolidones, 1-(2-alkoxyethyl)-4-phenyl-imidazolidine-2-thiones, certain of the corresponding 1-(2-hydroxyethyl) derivatives and their 3-acylated derivatives, and certain related compounds which are all useful as intermediates in a new process for the manufacture of tetramisole, dl-2,3,5,6-tetrahydro-6-phenylimidazo-[2,1-b]thiazole, and its derivatives. The compound tetramisole is useful as an anthelmintic.
摘要:
Substituted [[4-[4-(4-phenyl-1-piperazinyl)phenoxymethyl]-1,3-dioxolan-2-yl]methyl]-1H-imidazoles and 1H-1,2,4-triazoles having antimicrobial properties and being particularly useful in the treatment of vaginal candidosis.
摘要:
In the production of a semi-synthetic .beta.-lactam antibiotic by reacting an amino compound of the formula ##STR1## in which X is the remaining members of a ring of a .beta.-lactam antibiotic, andR is a hydrogen atom or a methoxy group,with an activated carboxylic acid derivative of the formula ##STR2## in which R.sub.1 is an organic radical,B is an optionally substituted phenyl, cyclohexadienyl or heterocyclyl radical andR.sub.2 is a lower alkyl radical,the improvement which comprises effecting the reaction in an acetone/water mixture which contains acetone and water in a volume ratio of about 0.5:1 to 3:1. Advantageously the reaction is carried out at about -10.degree. to +10.degree. C. in the presence of an organic base employing about 1.1 to 1.2 mols of the amino compound per mol of the activated carboxylic acid derivative.
摘要:
Cephalosporin antibiotics of the formula ##STR1## wherein R is ##STR2## and R" is H, C.sub.1 -C.sub.3 alkyl, allyl, propargyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl, benzyl or furfuryl; R' is H or methyl; or R is a cyclic urea group for example, R is ##STR3## R.sub.1 is phenyl, thienyl, or furyl; R.sub.3 is a lower alkyl substituted 1H-tetrazole-5-thio or 1,3,4-thiadiazole-5-thio group and R.sub.4 is hydrogen or an active ester group, e.g., an acetoxymethyl group; are highly active broad spectrum antibiotics especially useful in the treatment of infections attributable to the gram-negative microorganisms.