CAS: 550-74-3; Picrolonic Acid

相似化合物

83-07-8 30672-29-8 35496-23-2

专利信息

专利号:US-3940421-A
优先权日:1971-12-20
标题 :Intermediates for the preparation of thienobenzopyrans and thiopyranobenzopyrans
发明人：RAZDAN RAJ K; PARS HARRY G
权利人:LITTLE INC A
摘要:Novel thienobenzopyrans and thiopyranobenzopyrans represented by the formula ##SPC1## n Wherein m and n are each 0, 1, 2 or 3 and m + n is 2 or 3; R 1 is loweralkyl; R 2 is alkyl or cycloalkylloweralkyl and R 3 is hydrogen, loweralkyl, loweralkanoyl, carbamyl, N-loweralkylcarbamyl, N,N-diloweralkylcarbamyl, phosphonyl, hemisuccinate or an ester of another such acid, phosphate, dialkylaminoalkyl of the structure ##EQU1## or acid addition salt thereof, or dialkylaminoalkylanoyl of the structure ##EQU2## or acid addition salt thereof, wherein x is 1 through 6 and R 4 and R 5 are loweralkyl; the loweralkyl groups containing from 1 through 6 carbon atoms, the alkyl groups containing from 1 through 20 carbon atoms and the cycloalkyl groups containing from 3 through 8 ring carbon atoms. Novel intermediates for the synthesis of these compounds are also disclosed as well as methods for making the compounds.

专利号:US-3883551-A
优先权日:1969-08-25
标 题 :Thienobenzopyrans and thiopyranobenzopyrans
发明人：RAZDAN RAJ K; PARS HARRY G
权利人:LITTLE INC A
摘要:Novel thienobenzopyrans and thiopyranobenzopyrans represented by the formula WHEREIN M AND N ARE EACH 0, 1, 2 OR 3 AND M + N IS 2 OR 3; R1 is loweralkyl; R2 is alkyl or cycloalkylloweralkyl and R3 is hydrogen, loweralkyl, loweralkanoyl, carbamyl, N-loweralkylcarbamyl, N,N-diloweralkylcarbamyl, phosphonyl, hemisuccinate or an ester of another such acid, phosphate, dialkylaminoalkyl of the structure OR ACID ADDITION SALT THEREOF, OR DIALKYLAMINOALKANOYL OF THE STRUCTURE OR ACID ADDITION SALT THEREOF, WHEREIN X IS 1 THROUGH 6 AND R4 and R5 are loweralkyl; the loweralkyl groups containing from 1 through 6 carbon atoms, the alkyl groups containing from 1 through 20 carbon atoms and the cycloalkyl groups containing from 3 through 8 ring carbon atoms. Novel intermediates for the synthesis of these compounds are also disclosed as well as methods for making the compounds.

专利号:CH-416667-A
优先权日:1961-04-20
标 题:Process for protecting the hydroxyl groups of oxyamino acids or their functional derivatives in the synthesis of peptides

专利号:US-4160862-A
优先权日:1972-06-12
标 题 :1-Acyl-3-(amino-lower-alkyl)indoles
发明人：ZENITZ BERNARD L
权利人:STERLING DRUG INC
摘要:1-Acyl-3-(amino-lower-alkyl)indoles, useful as anti-inflammatory agents, are prepared either by acylation of a 3-(amino-lower-alkyl)indole; by Fisher indole synthesis from an N'-acylphenylhydrazine and an amino-lower-alkanone; by alkylation of an amine with a 1-acyl-3-(halo-lower-alkyl)indole; or by reductive alkylation of a 1-acyl-3-indole-lower-alkylcarboxaldehyde.

专利号:US-4021431-A
优先权日:1972-06-12
标 题:3-(Piperidino-lower-alkyl)-indoles
发明人：ZENITZ BERNARD L
权利人:STERLING DRUG INC
摘要:1-Acyl-3-(amino-lower-alkyl)indoles, useful as anti-inflammatory agents, are prepared either by acylation of a 3-(amino-lower-alkyl)indole; by Fisher indole synthesis from an N'-acylphenylhydrazine and an amino-lower-alkanone; by alkylation of an amine with a 1-acyl-3-(halo-lower-alkyl)indole; or by reductive alkylation of a 1-acyl-3-indole-lower-alkylcarboxaldehyde.