A Concise and Versatile Synthesis of Viridicatin Alkaloids from Cyanoacetanilides
摘要:
The efficient synthesis of 3-hydroxy-4-arylquinolin-2(1H)-ones through one-pot Knoevenagel condensation/epoxidation of cyanoacetanilides followed by decyanative epoxide-arene cyclization is described. A convergent assembly with functionalized aldehydes allows for rapid synthesis with diverse substitution patterns. Isolation of 3-hydroxy-4-arylquinolin-2(1H)-ones is readily accomplished by precipitation and filtration.
Regioselective Ring Expansion of Isatins with <i>In Situ</i> Generated α-Aryldiazomethanes: Direct Access to Viridicatin Alkaloids
作者:Yellaiah Tangella、Kesari Lakshmi Manasa、Namballa Hari Krishna、B. Sridhar、Ahmed Kamal、Bathini Nagendra Babu
DOI:10.1021/acs.orglett.8b01417
日期:2018.6.15
A novel efficient one-pot regioselective ring-expansion reaction of isatins with in situ generated α-aryl/heteroaryldiazomethanes for the construction of viridicatin alkaloids has been described under metal-free conditions. The utility of this protocol is further demonstrated in the synthesis of naturally occurring viridicatin, viridicatol, and substituted 3-O-methyl viridicatin and their scale up
we describe the synthesis of potent and selective quinolone-based histone deacetylase 6 (HDAC6) inhibitors. The quinolone moiety has been exploited as an innovative bioactive cap-group for HDAC6 inhibition; its synthesis was achieved by applying a multicomponent reaction. The optimization of potency and selectivity of these products was performed by employing computational studies which led to the
A Concise and Versatile Synthesis of Viridicatin Alkaloids from Cyanoacetanilides
作者:Yusuke Kobayashi、Takashi Harayama
DOI:10.1021/ol900255g
日期:2009.4.2
The efficient synthesis of 3-hydroxy-4-arylquinolin-2(1H)-ones through one-pot Knoevenagel condensation/epoxidation of cyanoacetanilides followed by decyanative epoxide-arene cyclization is described. A convergent assembly with functionalized aldehydes allows for rapid synthesis with diverse substitution patterns. Isolation of 3-hydroxy-4-arylquinolin-2(1H)-ones is readily accomplished by precipitation and filtration.