摘要:
Alkyl polyhydro-2-phenanthrylideneacetates are prepared by interacting the corresponding 2-oxopolyhydrophenanthrenes with a tri-lower-alkyl .alpha.-phosphono-lower-alkanoate. Said alkyl polyhydro-2-phenanthrylideneacetates are hydrolyzed to the free acid, and then reesterified via the acid chloride with a tertiaryamino-lower-alkanol to give basic esters having cardiotonic activity.
摘要:
Compounds of the tropane (8-azabicyclo[3.2.1]octane) series having an aromatic substiutent in the 2-position and a carboalkoxy group in the 3-position are prepared by reacting a tropane-3-carboxylate having a double bond in the 2,3-position with an aryl Grignard reagent. Transformations of the substituent on nitrogen are subsequently effected. Compounds where the 3-carboalkoxy group is in the exo configuration possess hypoglycemic activity, and those where the 3-carboalkoxy group is in the endo configuration possess narcotic antagonist activity.
摘要:
Aminocyclitol antibiotics of the streptamine, deoxystreptamine or dideoxystreptamine type are prepared by culturing a nutrient medium containing carbohydrates, a source of assimilable nitrogen, essential salts and a non-nitrogen containing cyclitol with a mutant of an aminocyclitol antibiotic producing organism.
摘要:
Aminocyclitol analogs of gentamicin C.sub.1, C.sub.2 and C.sub.1a and the corresponding compounds acylated on the 1-, 3- and 2'-amino groups with an .omega.-amino-.alpha.-hydroxy-lower-alkanoyl group are prepared by culturing a nutrient medium containing carbohydrates, a source of assimilable nitrogen, essential salts and an added aminocyclitol with a mutant of Micromonospora purpurea and acylating the product with an ester of an .omega.-(N-benzyloxycarbonyl)amino-.alpha.-hydroxy-lower-alkanoic acid followed by catalytic hydrogenolysis of the benzyloxycarbonyl group.
摘要:
Compounds of the tropane (8-azabicyclo[3.2.1]octane) series having an aromatic substituent in the 2-position and a carboalkoxy group in the 3-position are prepared by reacting a tropane-3-carboxylate having a double bond in the 2,3-position with an aryl Grignard reagent. Transformations of the substituent on nitrogen are subsequently effected. Compounds where the 3-carboalkoxy group is in the exo configuration possess hypoglycemic activity, and those where the 3-carboalkoxy group is in the endo configuration possess narcotic antagonist activity.
摘要:
Aminocyclitol analogs of gentamicin C.sub.1, C.sub.2 and C.sub.1a and the corresponding compounds acylated on the 1-, 3- and 2'-amino groups with an .omega.-amino-.alpha.-hydroxy-lower-alkanoyl group are prepared by culturing a nutrient medium containing carbohydrates, a source of assimilable nitrogen, essential salts and an added aminocyclitol with a mutant of Micromonospora purpurea and acylating the product with an ester of an .omega.-(N-benzyloxycarbonyl)amino-.alpha.-hydroxy-lower-alkanoic acid followed by catalytic hydrogenolysis of the benzyloxycarbonyl group.
摘要:
Aminocyclitol analogs of gentamicin C.sub.1, C.sub.2 and C.sub.1a and the corresponding compounds acylated on the 1-, 3- and 2'-amino groups with an .omega.-amino-.alpha.-hydroxy-lower-alkanoyl group are prepared by culturing a nutrient medium containing carbohydrates, a source of assimilable nitrogen, essential salts and an added aminocyclitol with a mutant of Micromonospora purpurea and acylating the product with an ester of an .omega.-(N-benzyloxycarbonyl)amino-.alpha.-hydroxy-lower-alkanoic acid followed by catalytic hydrogenolysis of the benzyloxycarbonyl group.
摘要:
Alkyl polyhydro-2-phenanthrylideneacetates are prepared by interacting the corresponding 2-oxopolyhydrophenanthrenes with a tri-lower-alkyl .alpha.-phosphono-lower-alkanoate. Said alkyl polyhydro-2-phenanthrylideneacetates are hydrolyzed to the free acid, and then reesterified via the acid chloride with a tertiary-amino-lower-alkanol to give basic esters having cardiotonic activity.
摘要:
Compounds of tropane (8-azabicyclo[3.2.1]octane) series having an aromatic substituent in the 2-position and a carboalkoxy group in the 3-position are prepared by reacting a tropane-3-carboxylate having a double bond in the 2,3-position with an aryl Grignard reagent. Transformations of the substituent on nitrogen are subsequently effected. Compounds where the 3-carboalkoxy group is in the exo configuration possess hypoglycemic activity, and those where the 3-carboalkoxy group is in the endo configuration possess narcotic antagonist activity.
摘要:
Compounds of the tropane (8-azabicyclo[3.2.1]octane) series having an aromatic substitutent in the 2-position and a carboalkoxy group in the 3-position are prepared by reacting a tropane-3-carboxylate having a double bond in the 2,3-position with an aryl Grignard reagent. Transformations of the substituent on nitrogen are subsequently effected. Compounds where the 3-carboalkoxy group is in the exo configuration possess hypoglycemic activity, and those where the 3-carboalkoxy group is in the endo configuration possess narcotic antagonist activity.