摘要:
Disclosed herein is a process for producing an asymmetric indoline-2-carboxylic acid of the structural Formula: ##STR1## wherein X is hydrogen, bromine, chlorine, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, which comprises:(a) assymetrically reducing an o-nitrophenylpyruvic acid III by contacting the acid III with a reducing complex formed from (R)-proline or (S)-proline, respectively, and sodium borohydride in an inert solvent to form, respectively, an (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid IV;(b) reacting, respectively, said (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid III with a Vilsmeier chlorinating reagent in which the chlorinating agent thereof is selected from a group consisting of thionyl chloride, oxalyl chloride, phosphorus oxychloride, phosphorus pentachloride and sulfuryl chloride and the amide thereof is selected from a group consisting of dimethylformamide, diethylformamide, dimethylacetamide and diethylacetamide, said reaction being run at temperatures of at least 20.degree. C., in order to obtain, respectively, and (R) or (S)-.alpha.-chloro-2-nitrobenzenepropanoic acid IV;(c) reducing the nitro group of said (R) or (S)-.alpha.-chloro-2-nitrobenzenepropanoic acid (V) to an amino group; and(d) cyclizing the resulting (R) or (S)-.alpha.-chloro-2-aminobenzenepropanoic acid in aqueous base.
摘要:
Disclosed herein is a process for producing an asymmetric indoline-2-carboxylic acid of the structural Formula: ##STR1## wherein X is hydrogen, bromine, chlorine, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, which comprises:(a) assymetrically reducing an o-nitrophenylpyruvic acid III by contacting the acid III with a reducing complex formed from (R)-proline or (S)-proline, respectively, and sodium borohydride in an inert solvent to form, respectively, an (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid IV;(b) reacting, respectively, said (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid III with a Vilsmeier chlorinating reagent in which the chlorinating agent thereof is selected from a group consisting of thionyl chloride, oxalyl chloride, phosphorus oxychloride, phosphorus pentachloride and sulfuryl chloride and the amide thereof is selected from a group consisting of dimethylformamide, diethylformamide, dimethylacetamide and diethylacetamide, said reaction being run at temperatures of at least 20.degree. C., in order to obtain, respectively, and (R) or (S)-.alpha.-chloro-2-nitrobenzenepropanoic acid IV;(c) reducing the nitro group of said (R) or (S)-.alpha.-chloro-2-nitrobenzenepropanoic acid (V) to an amino group; and(d) cyclizing the resulting (R) or (S)-.alpha.-chloro-2-aminobenzenepropanoic acid in aqueous base.
摘要:
Disclosed herein is a process for producing an asymmetric indoline-2-carboxylic acid of the structural Formula: ##STR1## wherein X is hydrogen, bromine, chlorine, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, which comprises:(a) assymetrically reducing an o-nitrophenylpyruvic acid III by contacting the acid III with a reducing complex formed from (R)-proline or (S)-proline, respectively, and sodium borohydride in an inert solvent to form, respectively, an (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid IV;(b) reacting, respectively, said (S) or (R)-.alpha.-hydroxy-2-nitrobenzenepropanoic acid III with a Vilsmeier chlorinating reagent in which the chlorinating agent thereof is selected from a group consisting of thionyl chloride, oxalyl chloride, phosphorus oxychloride, phosphorus pentachloride and sulfuryl chloride and the amide thereof is selected from a group consisting of dimethylformamide, diethylformamide, dimethylacetamide and diethylacetamide, said reaction being run at temperatures of at least 20.degree. C., in order to obtain, respectively, and (R) or (S)-.alpha.-chloro-2-nitrobenzenepropanoic acid IV;(c) reducing the nitro group of said (R) or (S)-.alpha.-chloro-2-nitrobenzenepropanoic acid (V) to an amino group; and(d) cyclizing the resulting (R) or (S)-.alpha.-chloro-2-aminobenzenepropanoic acid in aqueous base.
摘要:
Disclosed herein is a process for obtaining indoline-2-carboxylic acid (or derivatives thereof) comprising the following steps: (a) reducing .alpha.-oxo-2-nitrobenzenepropanoic acid to .alpha.-hydroxy-2-nitrobenzenepropanoic acid, (b) replacing the hydroxyl group of the latter with a chlorine atom utilizing a selected Vilsmeier chlorinating reagent at temperatures of at least 20.degree. C., (c) reducing the nitro group of the resulting .alpha.-chloro-2-nitrobenzenepropanoic acid to obtain .alpha.-chloro-2-aminobenzenepropanoic acid, and (d) cyclizing the latter in aqueous base to form the desired indoline-2-carboxylic acid. Alternately, steps (c) and (d) may be combined in a one pot step by using, for example, a Raney nickel-hydrazine reducing medium.
摘要:
Disclosed herein is a process for obtaining indoline-2-carboxylic acid (or derivaties thereof) comprising the following step: (a) reducing .alpha.-oxo-2-nitrobenzenepropanoic acid to .alpha.-hydroxy-2-nitrobenzenepropanoic acid, (b) replacing the hydroxyl group of the latter with a chlorine atom utilizing a selected Vilsmeier chlorinating reagent at temperatures of at least 20.degree. C., (c) reducing the nitro group of the resulting .alpha.-chloro-2-nitrobenzenepropanoic acid to obtain .alpha.-chloro-2-aminobenzenepropanoic acid, and (d) cyclizing the latter in aqueous base to form the desired indoline-2-carboxylic acid. Alternately, steps (c) and (d) may be combined in a one pot step by using, for example, a Raney nickel-hydrazine reducing medium.
摘要:
Disclosed herein is a process for obtaining indoline-2-carboxylic acid (or derivatives thereof) comprising the following steps: (a) reducing .alpha.-oxo-2-nitrobenzenepropanoic acid to .alpha.-hydroxy-2-nitrobenzenepropanoic acid, (b) replacing the hydroxyl group of the latter with a chlorine atom utilizing a selected Vilsmeier chlorinating reagent at temperatures of at least 20.degree. C., (c) reducing the nitro group of the resulting .alpha.-chloro-2-nitrobenzenepropanoic acid to obtain .alpha.-chloro-2-aminobenzenepropanoic acid, and (d) cyclizing the latter in aqueous base to form the desired indoline-2-carboxylic acid. Alternately, steps (c) and (d) may be combined in a one pot step by using, for example, a Raney nickel-hydrazine reducing medium.
摘要:
The antibacterial agents of this invention present the following structural formula: ##SPC1##In whichA is a member selected from the group consisting of ##EQU1## M is a member selected from the group consisting of --H, an alkali metal and --NH.sub.4 ; andY is a member selected from the group consisting of ##EQU2## wherein R is --H, alkanoyloxy of 2 to 6 carbon atoms, ##SPC2##Or,When taken with the 3-carboxy group, ##SPC3##.
摘要:
Disclosed herein are 2,3-dihydro-1H-indole-2-carboxylic acids substituted on the nitrogen with 3-mercapto-2-alkyl-1-oxoalkyl, 3-phosphoryl-2-alkyl-1-oxopropyl, or 2-amino-2-alkyl-1-oxoalkyl derivatives which act as inhibitors of angiotensin converting enzyme and as antihypertensive agents. The compounds of the invention (excluding disclosed intermediates) have the general formula: ##STR1## wherein: n is 1 or 0;R.sub.1 is hydrogen, lower alkyl, aryl or aralkyl;R.sub.2 is hydrogen or lower alkyl;R.sub.3 is hydrogen, lower alkyl or aroyl;R.sub.5 is hydroxy, amino, or lower alkoxy;X is hydrogen, hydroxy, lower alkyl, lower alkoxy, or halogen;Y is hydrogen, lower alkyl, or aryl;Y is hydrogen, lower alkyl, or aryl;R.sub.4 is ##STR2## wherein: L is O, NR.sub.7 or S (where R.sub.7 is hydrogen or lower alkyl);M is R.sub.8, OR.sub.8, SR.sub.8, or NR.sub.9 R.sub.10 (where R.sub.8 is hydrogen, lower alkyl, aryl, or aralkyl; and R.sub.9 and R.sub.10 are, independently, hydrogen, lower alkyl, or aryl);A is O, NR.sub.13 or S;R.sub.11 and R.sub.12 are, independently, hydrogen, alkyl, aralkylor aryl;R.sub.13 is hydrogen or lower alkyl;m is 0, 1, 2, or 3;R.sub.20 is hydrogen or aryl; andR.sub.21 is hydroxy or lower alkoxy; or pharmaceutically acceptable salts thereof.Claimed compounds are intermediates of the formula: ##STR3## wherein R.sub.13 is hydrogen or lower alkyl; R.sub.14 is R.sub.5 or OZ, where R.sub.5 is hydroxy, amino, or lower alkoxy, and Z is a carboxylic acid protecting group.
摘要翻译:本文公开了在氮上与3-巯基-2-烷基-1-氧代烷基,3-磷酰基-2-烷基-1-氧代丙基或2-氨基取代的2,3-二氢-1H-吲哚-2-羧酸 -2-烷基-1-氧代烷基衍生物,其作为血管紧张素转化酶的抑制剂和抗高血压药。 本发明的化合物(不包括所公开的中间体)具有以下通式:其中n为1或0; R1是氢,低级烷基,芳基或芳烷基; R2是氢或低级烷基; R3是氢,低级烷基或芳酰基; R5是羟基,氨基或低级烷氧基; X是氢,羟基,低级烷基,低级烷氧基或卤素; Y是氢,低级烷基或芳基; Y是氢,低级烷基或芳基; R 4是O,NR 7或S(其中R 7是氢或低级烷基); M是R 8,OR 8,SR 8或NR 9 R 10(其中R 8是氢,低级烷基,芳基或芳烷基;且R 9和R 10独立地是氢,低级烷基或芳基)。 A为O,NR 13或S; R 11和R 12独立地为氢,烷基,芳烷基或芳基; R 13是氢或低级烷基; m为0,1,2或3; R 20是氢或芳基; 和R 21是羟基或低级烷氧基; 或其药学上可接受的盐。 所要求的化合物是下式的中间体:其中R 13是氢或低级烷基; R14是R5或OZ,其中R5是羟基,氨基或低级烷氧基,Z是羧酸保护基。
摘要:
Disclosed herein are 2,3-dihydro-1H-indole-2-carboxylic acids substituted on the nitrogen with 3-mercapto-2-alkyl-1-oxoalkyl, 3-phosphoryl-2-alkyl-1-oxopropyl, or 2-amino-2-alkyl-1-oxoalkyl derivatives which act as inhibitors of angiotensin converting enzyme and as antihypertensive agents. The compounds of the invention (excluding disclosed intermediates) have the general formula: ##STR1## wherein: n is 1 or 0;R.sub.1 is hydrogen, lower alkyl, aryl or aralkyl;R.sub.2 is hydrogen or lower alkyl;R.sub.3 is hydrogen, lower alkyl or aroyl;R.sub.5 is hydroxy, amino, or lower alkoxy;X is hydrogen, hydroxy, lower alkyl, lower alkoxy, or halogen;Y is hydrogen, lower alkyl, or aryl;Y is hydrogen, lower alkyl, or aryl;R.sub.4 is ##STR2## wherein: L is O, NR.sub.7 or S (where R.sub.7 is hydrogen or lower alkyl);M is R.sub.8, OR.sub.8, SR.sub.8, or NR.sub.9 R.sub.10 (where R.sub.8 is hydrogen, lower alkyl, aryl, or aralkyl; and R.sub.9 and R.sub.10 are, independently, hydrogen, lower alkyl, or aryl);A is O, NR.sub.13 or S;R.sub.11 and R.sub.12 are, independently, hydrogen, alkyl, aralkyl or aryl;R.sub.13 is hydrogen or lower alkyl;m is 0, 1, 2, or 3;R.sub.20 is hydrogen or aryl; andR.sub.21 is hydroxy or lower alkoxy;or pharmaceutically acceptable salts thereof.
摘要翻译:本文公开了在氮上与3-巯基-2-烷基-1-氧代烷基,3-磷酰基-2-烷基-1-氧代丙基或2-氨基取代的2,3-二氢-1H-吲哚-2-羧酸 -2-烷基-1-氧代烷基衍生物,其作为血管紧张素转化酶的抑制剂和抗高血压药。 本发明的化合物(不包括所公开的中间体)具有以下通式:其中n为1或0; R1是氢,低级烷基,芳基或芳烷基; R2是氢或低级烷基; R3是氢,低级烷基或芳酰基; R5是羟基,氨基或低级烷氧基; X是氢,羟基,低级烷基,低级烷氧基或卤素; Y是氢,低级烷基或芳基; Y是氢,低级烷基或芳基; R 4是O,NR 7或S(其中R 7是氢或低级烷基); M是R 8,OR 8,SR 8或NR 9 R 10(其中R 8是氢,低级烷基,芳基或芳烷基;且R 9和R 10独立地是氢,低级烷基或芳基)。 A为O,NR 13或S; R 11和R 12独立地为氢,烷基,芳烷基或芳基; R 13是氢或低级烷基; m为0,1,2或3; R 20是氢或芳基; 和R 21是羟基或低级烷氧基; 或其药学上可接受的盐。
摘要:
The compounds of this invention are designated as quinoxalinyl esters of carbamimidothioic acids and exhibit the pharmacological properties of preventing gastric ulcers, reducing gastric secretions and lowering blood pressure. The compounds have the following structural formula: ##STR1## in which Q is hydrogen or nitro;A is hydrogen, methyl, ethyl, propyl, isopropyl, n-butyl, carbomethoxy, carbethoxy, carbopropoxy, carbisopropoxy, carbobutoxy, carbisobutoxy, or carbo-t-butoxy; andR.sup.1, R.sup.2, and R.sup.3 are, independently, hydrogen, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, t-butyl, allyl, or R.sup.1 and R.sup.3 may be concatenated with a carbon chain having 4 carbon atoms with R.sup.2 then being hydrogen; except that, when A and Q are hydrogen, R.sup.1, R.sup.2, and R.sup.3 may not all be hydrogen; and with the further exception that, where A is methyl and R.sup.1, R.sup.2, and Q are all hydrogen, R.sup.3 may not be ethyl;or a pharmaceutically acceptable salt thereof.