Abstract: Novel bis basic esters of 9-substituted phenanthrene and related 9-oxa and 9-aza derivatives thereof, their preparation and use for the prevention and inhibition of viral infections are disclosed.

Abstract: Trialkylsilyl esters of 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinic acid and acid addition salts thereof are disclosed. The compounds are useful intermediates in the preparation of pharmacological agents, especially antimicrobials of the penicillin or cephalosporin type. The compounds can be produced by reacting a 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinic acid with a silylating agent and are converted to the useful corresponding acid chloride by reaction with thionyl chloride.

Abstract: 6-[.alpha.-(Amidino- and imidoylaminoalkanoylamino)aracylamino]-penicillanic acids and synthetic methods for the preparation thereof.

Abstract: 2-Propanol derivatives of the formula: ##SPC1##And their pharmaceutically acceptable acid addition salts, which are useful as medicaments and can be produced by reacting a compound of the formula: A-CH.sub.2 -Z with a compound of the formula: A'-H [wherein R is hydrogen or lower alkanoyl; R.sub.1 is hydrogen, halogen, lower alkyl, lower alkoxy or trifluoromethyl; W is oxygen, sulfur, sulfinyl or sulfonyl; Y is a group of either one of the formulae: ##SPC2##(wherein R.sub.2 is hydrogen, halogen, lower alkyl or lower alkoxy and R.sub.3 is hydrogen, halogen, lower alkyl, lower alkoxy or trifluoromethyl); A and A' are each a group of either one of the formulae: ##SPC3##(wherein R.sub.1, W and Y are each as defined above), provided that A and A' are different each other; and Z is a group of either one of the formulae: ##EQU1## (wherein X is halogen, alkylsulfonyloxy or arylsulfonyloxy and R is as defined above)].

Abstract: O-alkyl-S-alkyl-O[6-alkyl- or 6-halo-pyridazin-(3)-yl]-(thiono)thiolphosphoric acid esters of the formula ##SPC1##In whichR and R', which may be identical or different, are each alkyl with 1 to 4 carbon atoms,R" is alkyl with 1 to 3 carbon atoms or halogen, andX is oxygen or sulfur,Which possess insecticidal and acaricidal properties.

Abstract: A compound represented by the formula ##SPC1##WhereinR, r.sub.1 and R.sub.2 are lower alkyl having six or less carbon atoms;X is halogen.

Abstract: Novel compounds of the formula ##EQU1## wherein X is selected from the group consisting of oxygen and sulfur, X.sub.1 is selected from the group consisting of alkyl of 1 to 6 carbon atoms, cyano and ##EQU2## Y.sub.1 is selected from the group consisting of alkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms and amino, n is 0, 1 or 2, X.sub.2 is selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1 to 6 carbon atoms, cyano and ##EQU3## R is alkyl of 1 to 6 carbon atoms, R.sub.1 is selected from the group consisting of alkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms and ##EQU4## and R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen and alkyl of 1 to 6 carbon atoms with the proviso that X.sub.1 is other than alkyl when X.sub.2 is alkyl or hydrogen, having insecticidal, nematocidal and acaricidal properties.

Abstract: Process for resolving a racemic mixture of an oxo-type prostaglandin intermediate by (a) converting the oxo compound by reaction with an optically active ephedrine to a mixture of oxazolidine diastereomers, (b) separating at least one oxazolidine diastereomer from said mixture, (c) hydrolyzing said oxazolidine to free the optically active oxo compound, and (d) recovering said optically active oxo compound.