Bayer Aktiengesellschaft

Wolfgang Roben

Dieter Habich

Arnold Paessens

Jutta Hansen

Rudolf Schohe-Loop

Joachim Schuhmacher

Hans-Georg Heine

Siegfried Raddatz

Achim Feurer

Peter Andrews

Peter-Rudolf Seidel

Hanno Wild

Wolfgang Bender

Bernard Schmidt

Franz-Josef Van Der Staay

Georg Terstappen

William Bullock

Jane C Chisholm

Richard J Fanelli

Richard T McCarthy

Gabriele Handke

Stendel Wilhelm

The present invention provides 2,4'-bridged bis-2,4-diaminoquinazolines of the general formula (I): ##STR1## in which the indicated substituents are as defined in the description. The invention also provides a process for the preparation of the compounds of the formula (I), drugs containing said compounds and processes for the preparation of drugs containing said compounds.

2,4'-bridged bis-2,4-diaminoquinazolines

The present invention relates to the use of substituted chromans of the general formula (I) ##STR1## in which the substituents have the meaning indicated in the description, for the production of medicaments, in particular as HIV protease-inhibiting agents, new active compounds and processes for their preparation.

Use of substituted chromans, some of which are known, as medicaments,

The present invention relates to new trifluoromethyl-containing pseudopeptides of the general formula (I) ##STR1## in which W, A, B, D, E, R.sub.1, R.sub.2 and R.sub.3 have the meaning as outlined of their making and use as pharmaceuticals.

Trifluoromethyl-containing pseudopeptides active against retroviruses

Parasiticidally active avermectin derivatives of the formula ##STR1## in which R.sup.1 stands for hydrogen, OH, C.sub.1-5 -alkanoyloxy, .alpha.-L-oleandrosyloxy, .alpha.-L-oleandrosyl-.alpha.-L-oleandrosyloxy, 4'-C.sub.1-5 -alkanoyl-.alpha.-oleandrosyloxy or 4'-C.sub.1-5 -alkanoyl-.alpha.-L-oleandrosyl-.alpha.-L-oleandrosyloxy,

Parasiticidal avermectin derivatives

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Bergisch Gladbach, Germany

Wolfgang Roben