1,3-Disubstituted 4-methyl-1H-pyrrole-2-carboxamides and their Use in Medicaments
申请人:Oberboersch Stefan
公开号:US20090137573A1
公开(公告)日:2009-05-28
1,3-disubstituted 4-methyl-1H-pyrrole-2-carboxamides corresponding to formula I
methods for their production, pharmaceutical compositions containing them, and the use thereof for noradrenalin receptor regulation, particularly for inhibiting noradrenalin reuptake, and/or for 5-HT receptor regulation, particularly for inhibiting 5-hydroxy tryptophan reuptake, and/or for opioid receptor regulation and/or for batrachotoxin (BTX) receptor regulation and/or for treating or inhibiting pain and other conditions.
Stericallyhinderedporphyrins with four bulky aryl groups in the β-positions are prepared by the reduction of ethyl 3-aryl-4-alkylpyrrole-2-carboxylate with LiAIH4 followed by treatment with an acid and an oxidizing agent.
Cobalt(II) Porphyrin Catalyzed Cascade Reaction of Pyrrolyl Ketones for Construction of Polysubstituted Pyrrolizidines and Pyrrolizines
作者:Fei Hao、Annapureddy Rajasekar Reddy、Cong-Ying Zhou、Chi-Ming Che
DOI:10.1002/adsc.201701472
日期:2018.4.3
via a cobalt(II) porphyrin catalyzed intramolecular cyclopropanation/ring opening cascade reaction of hydrazones derived from pyrrolyl ketones. With CoII(F20TPP) as catalyst, a variety of pyrrolyl ketones underwent condensation, intramolecular cyclopropanation/ring opening cascade reaction and subsequent oxidation or reduction to give 3H‐pyrrolizines or pyrrolizidines in good yields. This Co(II) catalyzed
2-Hydroxymethyl-1-methylsulfonyl-3,4-disubstituted pyrroles and 2-hydroxymethyl-3,4-disubstituted pyrroles were effectively converted into the corresponding 2-(substituted methyl)pyrrole derivatives by the reaction with various nucleophiles in the presence of base. These products were further transformed to the corresponding porphyrins regioselectively under almost neutral or basic conditions.
Syntheses of 3,4-Disubstituted 2-Tosylpyrroles and 5-Tosyl-1,5-dihydro-2<i>H</i>-pyrrol-2-ones Starting from Ethyl 3,4-Disubstituted 2-Pyrrolecarboxylates
The syntheses of 3,4-disubstituted 2-tosylpyrroles and 5-tosyl-1,5-dihydro-2H-pyrrol-2-ones were accomplished via 3,4-disubstituted 2-iodo-5-tosylpyrroles starting from ethyl 3,4-disubstituted 2-pyrrolecarboxylates.