Hoffmann-la Roche Inc.

Ka-kong Chan

Beverly A Pawson

Gabriel G Saucy

Perry Rosen

George W Holland

Dennis D Keith

Manfred Weigele

Harry A Albrecht

Rudolf L Then

There are presented anti-bacterial cephalosporins having broad antimicrobial activity of the formula ##STR1## wherein R.sub.1 is an antibiotically active quinolonyl; R.sub.2 is selected from the group consisting of hydrogen, lower alkoxy, amino, lower alkylthio and amido; R.sub.3 is selected from the group consisting of hydrogen, and acyl group, and m is 0, 1 or 2 and the readily hydrolysable esters or salts of these compounds and hydrates of the compounds of formula I or of their esters or salts.

Anti-bacterial cephalosporin compounds

An asymmetric synthesis for Vitamin E in an optically active pure form for 4-(2,5-diloweralkanoyloxy)-3,4,6-trimethylphenyl-butan-2-one and intermediates therein.

Asymmetric synthesis of natural vitamin E

Asymmetric synthesis of natural vitamin E.

Quinone intermediates for asymmetric synthesis of natural vitamin E

Natural Vitamin E intermediate

Natural vitamin E intermediate

Unsaturated eicosanoic acids and derivatives thereof which inhibit the synthesis of SRS-A are useful for treating and preventing asthma and allergic responses caused by SRS-A as well as useful in inhibiting inflammation.

Unsaturated eicosanoic acids

A compound of the formula ##STR1## where R.sub.1 is hydrogen, lower alkyl, alkaline earth metal or alkali metal; or magnesium halide salts thereof, useful as intermediates for unsaturated eicosanoic acids and derivatives thereof which inhibit the synthesis of SRS-A.

Eicosa-5,8-diynoic acids and 2-fluoro-eicostrien-5-ynoic acid and esters thereof which inhibit the synthesis of SRS-A are useful for treating and preventing asthma and allergic responses caused by SRS-A as well as useful in inhibiting inflammation.

9-Substituted, 4- or 6-fluorine substituted retinoic acid derivatives useful as antitumor agents and in the treatment of acne as well as a method for their manufacture are disclosed. Substituents at the 9-position include substituted phenyl, thienyl and furyl groups.

5(Halophenyl)-2-fluoro-pentadienals

Compounds represented by the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are lower alkyl, R.sub.4 is lower alkoxy, R.sub.6 and R.sub.8 are methyl or trifluoro methyl, R.sub.9 is formyl, hydroxymethyl, alkoxymethyl, alkanoyloxymethyl, carboxyl, alkoxycarbonyl, lower alkenoxycarbonyl, lower alkynoxycarbonyl, carbamoyl, mono(lower alkyl)-carbamoyl, di(lower alkyl)carbamoyl or N-heterocyclylcarbonyl, R.sub.5, R.sub.7, R.sub.10, R.sub.11, R.sub.12 and R.sub.13 are hydrogen or fluorine with the proviso that at least one of R.sub.5, R.sub.7, R.sub.10, R.sub.11, R.sub.12 or R.sub.13 is fluorine or at least one of R.sub.6 or R.sub.8 is trifluoro methyl, or pharmaceutically acceptable salts thereof useful as antitumor agents are disclosed.

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Hopatcong, NJ, United States of America

Ka-kong Chan