Hoechst Aktiengesellschaft

Hoechst Japan Limited

Ryoichi Satoh

Hans-Jochen Lang

Denis Carniato

Masakazu Katoh

Hiroshi Kitagawa

Heinrich Christian Englert

Tsutomu Inoue

Christoph Naumann

Mizuho Inazu

Anne-Marie Moura

Pharmaceutical compositions for the inhibition of bone resorption comprising a pharmaceutical carrier and a therapeutically effective amount of a benzopyran derivative represented by the general formula (I) ##STR1## wherein the broken-lined bond denotes an optional double bond, R.sub.1 denotes a hydrogen atom or a hydroxyl group, R.sub.2 denotes a cyano group, a phenylsulfonyl group or a halogen-substituted methoxyl group, and R.sub.3 denotes a group having the formula ##STR2## Since they inhibit bone resorption, they are useful for the treatment and prevention of diseases associated with bone metabolism.

Pharmaceutical composition of benzopyranes for the inhibition of bone

The invention describes tautomeric compounds of the formula Ia, Ib or Ic ##STR1## and/or their physiologically tolerable salts, in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are a hydrogen atom, substituted (C.sub.1 -C.sub.7)-alkyl, (C.sub.3 -C.sub.10)-cycloalkyl, substituted phenyl or (C.sub.1 -C.sub.4)-alkylphenyl, R.sup.2 is substituted phosphoric acid, R.sup.2 and R.sup.3, R.sup.2 and R.sup.5 or R.sup.4 and R.sup.5 form a monocyclic 5- to 7-membered saturated or unsaturated heterocyclic ring which is mono- or polysubstituted, R.sup.8, R.sup.9, R.sup.10 and R.sup.11 are a hydrogen atom or (C.sub.1 -C.sub.5)-alkyl, X is a hydrogen atom, hydroxyl or halogen, l and n are an integer from 0 to 7, m is an integer from 0 to 2, and the sum of the numbers l, m and n is less than or equal to 10, a process for the preparation of the compounds of the formula Ia, Ib or Ic, pharmaceuticals and their use for the prophylaxis or treatment of osteoporosis.

Guanidinoalkyl-1,1-bisphosphonic acid derivatives, process for their

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Saitama, Japan

Ryoichi Satoh