Abstract: Optically pure (S)-.alpha.-[(tert-butylsulfonyl)methyl]-hydrocinnamic acid of the formula ##STR1## is prepared from racemic (RS)-.alpha.-[(tert-butylsulfonyl)-methyl]hydrocinnamic acid esters of the formula ##STR2## wherein R.sup.1 is C.sub.1-4 -alkyl, by protease-catalyzed selective hydrolysis in emulsion in an aqueous medium at a controlled pH value between about 6.5 and 8.5.

Abstract: Antibacterial compounds of the formula ##STR1## wherein R is a mononuclear carbocyclic aromatic group, a 5-membered aromatic heterocyclic group which contains as the hetero (non-carbon) ring member(s) an oxygen or sulphur atom or an imino or lower alkylimino group and, optionally, one or two nitrogen atoms, or a 6-membered aromatic heterocyclic group which contains one to three nitrogen atoms as the hetero ring member(s); R.sup.1 is hydrogen or a 3-substituent which is usable in cephalosporin chemistry; A is lower alkylene or C.sub.3-7 -cycloalkylene which is optionally substituted with carboxy, carbamoyl, lower alkylcarbamoyl or di(lower alkyl)carbamoyl; Q is lower alkylene or C.sub.3-7 -cycloalkylene which is optionally substituted with carboxy, carbamoyl, lower alkylcarbamoyl or di(lower alkyl)carbamoyl, or the group --NR.sup.2 -- or --NR.sup.2 NR.sup.3 --; R.sup.2 and R.sup.3 are independently hydrogen or lower alkyl; p and m are the zero or 1, n is zero, 1 or 2; R.sup.

Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is hydrogen, halogen, trifluoromethyl, nitro, cyano, lower alkyl, lower alkoxycarbonyl, lower alkylthio, lower alkylsulphonyl, lower alkanoyl, aroyl, carbamoyl, mono(lower alkyl)carbamoyl or di(lower alkyl)carbamoyl, R.sup.2 is hydrogen, lower alkyl or phenyl, R.sup.3 is hydrogen or lower alkyl, R.sup.4 and R.sup.5 each is hydrogen or R.sup.4 is hydroxy and R.sup.5 is hydrogen or R.sup.4 and R.sup.5 together are a carbon-carbon bond and R.sup.6 is an aryl or N-heteroaryl group carrying a hydroxy group in the 2-position or, in the case of a N-heteroaryl group, also a N-oxide group in the 2-position,and pharmaceutically acceptable acid addition salts of these compounds of formula I which are basic, possess pronounced potassium channel activating activity and can be used as medicaments, particularly in the control or prevention of hypertension, congestive heart failure, angina pectoris, peripheral and cerebral vascular disease and smooth muscle disorders.

Abstract: Poultry feed premixes and finished poultry feeds which contain particles comprising a Vitamin D.sub.3 metabolite and Vitamin D.sub.3 in a weight ratio ranging from about 1:2.5 to about 1:125 are described. These premixes and feeds are useful for promoting egg shell strength and bone strength in older egg laying hens as well as to provide to such hens the usual benefits of Vitamin D.sub.3 in a diet. The invention also relates to methods for improving egg shell strength in older egg laying hens which comprise administering to hens such particles.

Abstract: The invention is directed to a process and intermediates for the preparation of benzopyrans such as racemic-6-acetyl-7-[5-(4-acetyl-3-hydroxy-2-propylphenoxy)pentyloxy]-3, 4-dihydro-2H-1-benzopyran-2-carboxylic acid.

Abstract: Tricyclic imidazole derivatives of formula I ##STR1## wherein one of R.sup.1 and R.sup.3 is lower alkyl and the other is hydrogen or lower alkyl, R.sup.2 is lower alkyl, n is the number 0 or 1, A is ##STR2## R.sup.4, R.sup.5, R.sup.6 and R.sup.7 each is lower alkyl land R.sup.8 is hydrogen nor lower alkyl,and their acid addition salts are described. These compounds are useful as agents for control or prevention of ulcers and of increaased gastric acid secretion.

Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is hydrogen, halogen, trifluoromethyl, nitro, cyano, lower alkyl, lower alkoxycarbonyl, lower alkylthio, lower alkylsulphonyl, lower alkanoyl, aroyl, carbamoyl, mono(lower alkyl)carbamoyl or di(lower alkyl)carbamoyl, R.sup.2 is hydrogen, lower alkyl or phenyl, R.sup.3 is hydrogen or lower alkyl, R.sup.4 and R.sup.5 each is hydrogen or R.sup.4 is hydroxy and R.sup.5 is hydrogen or R.sup.4 and R.sup.5 together are a carbon-carbon bond and R.sup.6 is an aryl or N-heteroaryl group carrying a hydroxy group in the 2-position or, in the case of a N-heteroaryl group, also a N-oxide group in the 2-position, and pharmaceutically acceptable acid addition salts of these compounds of formula I which are basic, possess pronounced potassium channel activating activity and can be used as medicaments, particularly in the control or prevention of hypertension, congestive heart failure, angina pectoris, peripheral and cerebral vascular disease and smooth muscle disorders.