摘要:
Phosphoric acid diesters of the formula: and salts thereof are produced by reacting a-tocopherol with a halogenophosphorylating agent, reacting the resultant product with ascorbic acid having protecting hydroxy groups in the 5- and 6-positions, and removing the protected groups. The compounds can be employed as prophylactic and therapeutic agents for cataracts and climacteric hazards and also as an ingredient for cosmetics having skin-beautifying action.
摘要:
Phosphoric diesters of general formula: [wherein R₁ and R₂ are the same or different and each means a methyl group or a hydrogen atom, provided that at least one of R₁ and R₂ is a hydrogen atom, or a salt thereof] can be produced by reacting β, γ or δ-tocopherol with a halophosphorylating agent such as phosphorus oxychloride, reacting the resultant product with ascorbic acid whereof hydroxyl groups at 5- and 6-positions are protected, and then removing protected groups from the hydroxy groups. The phosphoric diesters are novel compounds having antiinflammatory activity.
摘要:
Phosphoric diesters of general formula: [wherein R₁ and R₂ are the same or different and each means a methyl group or a hydrogen atom, provided that at least one of R₁ and R₂ is a hydrogen atom, or a salt thereof] can be produced by reacting β, γ or δ-tocopherol with a halophosphorylating agent such as phosphorus oxychloride, reacting the resultant product with ascorbic acid whereof hydroxyl groups at 5- and 6-positions are protected, and then removing protected groups from the hydroxy groups. The phosphoric diesters are novel compounds having antiinflammatory activity.
摘要:
Phosphoric acid diesters of the formula: and salts thereof are produced by reacting a-tocopherol with a halogenophosphorylating agent, reacting the resultant product with ascorbic acid having protecting hydroxy groups in the 5- and 6-positions, and removing the protected groups. The compounds can be employed as prophylactic and therapeutic agents for cataracts and climacteric hazards and also as an ingredient for cosmetics having skin-beautifying action.
摘要:
A new thiazolidine derivative of the formula: where n stands for an integer of 3 to 6 and salts thereof show strong aldose reductase inhibition and are useful for prophylaxis or therapy of diabetic cataract, diabetic neuropathy in mammals.
摘要:
A new thiazolidine derivative of the formula: where n stands for an integer of 3 to 6 and salts thereof show strong aldose reductase inhibition and are useful for prophylaxis or therapy of diabetic cataract, diabetic neuropathy in mammals.
摘要:
A thiazolidine derivatives of the formula: wherein R is a phenyl group having 2 nuclear substituent groups selected from the class consisting of a lower alkyl having 1 to 6 carbon atoms, a lower alkoxy having 1 to 7 carbon atoms, hydroxyl and a carboxylic acyloxy having 1 to4 carbon atoms or a phenyl group having a methylenedioxy group in adjacent positions on its ring; R' is H or an alkyl having 1 to 6 carbon atoms, or a physiologically acceptable salt thereof is a novel compound and is having the activity to control certain chronic symptoms due to diabetes, such as diabetic cataract, diabetic neuropathy and diabetic retinosis.