Synthesis of 1,2,3,4-tetrahydro-.BETA.-carboline derivatives as hepatoprotective agents. III. Introduction of substituents onto methyl 1,2,3,4-tetrahydro-.BETA.-carboline-2-carbodithioate.
Tetrahydro-.beta.-carboline derivative of the formula: ##STR1## wherein R.sup.2 is lower alkyl, and either (A) R.sup.1 is hydroxymethyl or carboxy, R.sup.3 and R.sup.4 are both hydrogen, and X is halogen, lower alkyl, lower alkoxy, hydroxy or benzyloxy; or (B) R.sup.1 is hydrogen, carboxy-lower alkyl or a group of the formula: --CH.sub.2 OY, Y is lower alkyl, lower alkanoyl or an oxygen-containing monocyclic heterocyclic group, R.sup.3 is hydrogen, hydroxy-lower alkyl or carboxy, R.sup.4 is hydrogen or hydroxy-lower alkyl, and X is hydrogen, or a salt thereof, which has excellent activities for alleviating, curing and preventing hepatic damages and is useful as a therapeutic or prophylactic agent for hepatic diseases.
Enabling C7 Methylation and Arylation of the Indolyl Core via P(III)‐Directed C−H Functionalization
作者:Christopher B. Kelly、Rosaura Padilla‐Salinas、Wenyong Chen、Mikko Muuronen、Jaume Balsells
DOI:10.1002/adsc.202400138
日期:——
Herein, the C‐H functionalization paradigm is leveraged to tackle C7 C–H functionalization of the tryptophan core. The devised process, which was expanded to related systems, utilizes an N‐bound unsymmetrical “designer” phosphine to direct C–H functionalization to C7 while maintaining operational ease and directing group installation/removal. Quantum mechanically calculated steric properties and activation
Novel tetrahydro-B-carboline derivative and processes for preparation thereof
申请人:Tanabe Seiyaku Co., Ltd.
公开号:EP0165017A2
公开(公告)日:1985-12-18
Tetrahydro-β-carboline derivative of the formula:
Wherein R2 is lower alkyl, and either
A) R1 is hydroxymethyl or carboxy,
R3 and R4 are both hydrogen, and
X is halogen, lower alkyl, lower alkoxy, hydroxy or
benzyloxy; or
B) R' is hydrogen, carboxy-lower alkyl or a group of the formula: -CN2OY,
Y is lower alkyl, lower alkanoyl or an oxygen-containing
monocyclic heterocyclic group,
R3 is hydrogen, hydroxy-lower alkyl or carboxy,
R" is hydrogen or hydroxy-lower alkyl, and
X is hydrogen,
or salt thereof, which has excellent activities for alleviating, curing and preventing hepatic damages and is useful as a therapeutic or prophylactic agent for hepatic diseases.
式中的四氢-β-咔啉衍生物:
其中 R2 为低级烷基,且
A) R1 是羟甲基或羧基、
R3 和 R4 都是氢,以及
X 是卤素、低级烷基、低级烷氧基、羟基或
苄氧基;或
B) R' 是氢、羧基-低级烷基或式中的一个基团:-CN2OY、
Y 是低级烷基、低级烷酰基或含氧单环杂环基团
单环杂环基团、
R3 是氢、羟基低级烷基或羧基、
R" 是氢或羟基低级烷基,以及
X 是氢、
或其盐,对减轻、治疗和预防肝损伤具有极好的活性,可用作肝病的治疗剂或预防剂。
SAIGA, YUTAKA;IIJIMA, IKUO;ISHIDA, AKIHIKO;MIYAGISHIMA, TOSHIKAZU;HOMMA, +, CHEM. AND PHARM. BULL., 35,(1987) N 8, 3284-3291