A Brønsted Acid Catalyzed Cascade Reaction for the Conversion of Indoles to α‐(3‐Indolyl) Ketones by Using 2‐Benzyloxy Aldehydes
作者:Ankush Banerjee、Modhu Sudan Maji
DOI:10.1002/chem.201902268
日期:2019.9.2
A Brønstedacid catalyzed, operationally simple, scalable route to several functionalized α-(3-indolyl) ketones has been developed and the long-standing regioisomeric issue has been eliminated by choosing appropriate carbonyls. A readily available and cheap bottle reagent was used as the catalyst. This protocol was also applicable to the synthesis of densely functionalized α-(3-pyrrolyl) ketones. A
Synthesis of substituted carbazoles and β -carbolines by cyclization of diketoindole derivatives
作者:Eric Duval、Gregory D. Cuny
DOI:10.1016/j.tetlet.2004.05.053
日期:2004.7
β-carbolines and carbazoles is described. Diketoindole intermediates, prepared by Friedel–Crafts acylations of 3-substituted indoles, have been converted to 3-hydroxycarbazoles and β-carbolines in good yields, 51–96% and 82–97%, respectively. This method also allows for the formation of 4-substituted β-carbolines. The application of this methodology to the synthesis of the natural products hyellazole and 6-chlorohyellazole
A short divergent approach to highly substituted carbazoles and β-carbolines via in situ-generated diketoindoles
作者:Martin Untergehrer、Franz Bracher
DOI:10.1016/j.tetlet.2020.151597
日期:2020.3
an aza-alkylation/Michael addition cascadereaction developed by Kim and co-workers we have developed divergent cascadereactions leading to either highly substituted 1-hydroxycarbazoles, 3-hydroxycarbazoles or β-carbolines, starting from readily accessible ortho-arylsulfonylaminobenzaldehydes. Olefination of the aldehyde functionality by aldol condensation or Wittig olefination gave reactive enone intermediates
Substituted pyrido[3,4-b]indoles for the treatment of cartilage disorders
申请人:SANOFI
公开号:US11130755B2
公开(公告)日:2021-09-28
The present invention relates to 8-aryl-substituted and 8-heteroaryl-substituted 9H-pyrido[3,4-b]indoles of the formula (I), in which A, E, G, R1 to R6 and R10 are as defined in the claims, which stimulate chondrogenesis and cartilage matrix synthesis and can be used in the treatment of cartilage disorders and conditions in which a regeneration of damaged cartilage is desired, for example joint diseases such as osteoarthritis. The invention furthermore relates to processes for the synthesis of the compounds of the formula (I), their use as pharmaceuticals, and pharmaceutical compositions comprising them.