Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Solvent-Dependent Chemoselective and Stereoselective Approach to Synthesis of Spiro-γ-Lactams with Potent Anticancer Activity.Recommanded Product: 3222-47-7.
Chemoselective approaches were developed for derivatizing diastereoselective chromanone spiro-γ-lactams through the Michael-type addition by using amide as a weak nucleophile to construct the spiro-carbon center under basic conditions. To expand the scope of this post-Ugi cascade reaction, a new series of oxidized chromone derivatives Iand II [R1 = H, Me, Cl, etc.; R2 = Ph, 2-thienyl, 1,3-benzodioxol-5-yl, etc.; R3 = 2,6-dimethylphenyl, 4-methoxyphenyl, 1-naphthyl, etc.] was synthesized by altering solvent from EtOH to DMF. Compounds II [R1 = H; R2 = 1,3-benzodioxol-5-yl, 4-nitrophenyl; R3 = 2,6-dimethylphenyl] which could be synthesized in one day, demonstrated comparable anticancer activities with legendary anticancer drug paclitaxel in the PANC and U87 cell lines. This methodol. offers a new approach to construct spiro-carbon centers with functionalized chromanones or chromones under mild reaction conditions.
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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics