Abstract: Dihydronaphthalene compounds have excellent 17&agr;-hydroxylase/C17-20-lyase inhibiting activity, thromboxan A2 synthesis inhibiting activity, and aromatase inhibiting activity and are thereby are useful as preventive and/or therapeutic agents for various male sex hormone- and female sex hormone-dependent diseases such as prostate cancer, prostatomegaly, masculinization, breast cancer, mastopathy, uterine cancer, endometriosis, and ovarian cancer, as well as myocardial infarction, angina pectoris, and bronchial asthma.

Abstract: Dihydronaphthalene compounds have excellent 17&agr;-hydroxylase/C17-20-lyase inhibiting activity, thromboxan A2 synthesis inhibiting activity, and aromatase inhibiting activity and are thereby are useful as preventive and/or therapeutic agents for various male sex hormone- and female sex hormone-dependent diseases such as prostate cancer, prostatomegaly, masculinization, breast cancer, mastopathy, uterine cancer, endometriosis, and ovarian cancer, as well as myocardial infarction, angina pectoris, and bronchial asthma.

Abstract: The present invention provides new benzofuranone derivatives and a method for producing the derivatives useful for a therapeutic agent for preventing and/or treating hormone dependent diseases.The present invention is a new benzofuranone derivative represented by a particular general formula (I). ##STR1## In the production, a particular benzofuranone compound and a particular benzaldehyde are reacted.

Abstract: The present invention provides new tetralone or benzopyranone derivatives and a method for producing the derivatives useful for a therapeutic agent for preventing and/or treating hormone dependent diseases. The present invention is a new tetralone or benzopyranone derivative represented by a particular general formula (I). ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen, a hydroxy group, an alkyloxy group or an aralkyloxy group, respectively, R.sub.3 -R.sub.7 represent hydrogen, a hydroxy group or a straight or branched alkyl, alkyloxy or aralkyloxy group having 1-6 carbon atoms, a halogen, an amino group or an alkylene dioxy group joined at R.sub.3 and R.sub.4, R.sub.4 and R.sub.5, R.sub.5 and R.sub.6, or R.sub.6 and R.sub.7, respectively, and A represents a methylene or oxygen.In the production, a particular tetralone or benzopyranone compound and a particular benzaldehyde compound are reacted.

Abstract: Particular hexahydropyrano [3,2-b] [1,4] benzothiazine derivatives represented by the following general formula (I) or pharmaceutically acceptable acid-addition salts thereof. ##STR1## The compounds can facilitate the metabolic turnover of inositol phospholipids at a hippocampus playing an important part in memory, and improve cerebral function leading the memory. The compounds can be utilized as agents for activating brain metabolism and improving cerebral function.

Abstract: Novel 7.beta.-hydroxy-4-pregnene-3,20-dione derivatives are disclosed.The group of these compounds has possibility of being utilized as an intermediate for the synthesis of progesterone derivatives having ovulation-inhibiting activity. These compounds themselves have also cell differentiation activity for M1 cells.

Abstract: A process for the preparation in high yield of 14.alpha.-hydroxy-4-androstene-3,6,17-trione which has an aromatase inhibition activity and is useful as an antitumor agent, in which the 6.beta.-hydroxyl group of 6.beta., 14.alpha.-dihydroxy-4-androstene-3,17-dione is selectively oxidized with the aid of visible light energy.

Abstract: Novel androst-4-ene-3,17-dione derivatives are disclosed. The group of these compounds has biological activities, in particular, the inhibiting activity on human placenta-derived estrogen-synthesizing enzyme. Therefore these compounds are expected to be utilized in the field of medical care, particularly as anticancer drugs.

Abstract: Novel 7.beta.-hydroxy-4-pregnene-3,20-dione derivatives are disclosed.The group of these compounds has possibility of being utilized as an intermediate for the synthesis of progesterone derivatives having ovulation-inhibiting activity. These compounds themselves have also cell differentiation activity for M1 cells.

Abstract: Novel androst-4-ene-3,17-dione derivatives are disclosed. The group of these compounds has biological activities, in particular, the inhibiting activity on human placenta-derived estrogen-synthesizing enzyme. Therefore these compounds are expected to be utilized in the field of medical care, particularly as anticancer drugs.

Abstract: Novel alprenolol derivatives represented by the formula: ##STR1## wherein R is ##STR2## and hydrochlorides thereof are disclosed.