Synthesis of chromeno[2,3-b ]indol-11(6 H)-one via PhI(OAc)2-mediated intramolecular oxidative C(sp2)-N(H2) bond formation
Various chromeno[2,3-b]indol-11(6H)-ones were conveniently constructed via phenyliodine(III) diacetate (PIDA)-mediated intramolecular oxidative annulation. This method, while realizing a direct oxidative C-N bond formation between an aromatic ring and a p
Sun, Jiyun,Zhang-Negrerie, Daisy,Du, Yunfei,Zhao, Kang
Flavones and structurally related 4-chromenones inhibit carbonic anhydrases by a different mechanism of action compared to coumarins
An inhibition study of several carbonic anhydrase (CA, EC 4.2.1.1) isoforms with flavones and aminoflavones, compounds possessing a rather similar scaffold with the coumarins, recently discovered inhibitors of this enzyme, is reported. The natural product
Balboni, Gianfranco,Congiu, Cenzo,Onnis, Valentina,Maresca, Alfonso,Scozzafava, Andrea,Winum, Jean-Yves,Maietti, Annalisa,Supuran, Claudiu T.
experimental part
p. 3063 - 3066
(2012/06/17)
Convenient synthesis of chromones and quinolinones
A one pot synthesis of substituted chromones and quinolinones by condensing commercially available and cheaper molecules like salicylic acid and anthranilic acid respectively with alkenes / nitriles followed by insitu cyclization using ammonium acetate as base has been achieved.
Hemavathi,Naveen,Lokanatha Rai
p. 409 - 410
(2013/09/24)
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