Direct amination of naphthopurpurin and mompain, sea urchin pigments, and their O-methyl ethers by the reaction with ammonia
作者:O. P. Shestak、V. L. Novikov、V. P. Glazunov
DOI:10.1007/s11172-021-3152-0
日期:2021.4
The regiochemistry of direct amination of 2-hydroxynaphthazarin (naphthopurpurin) and 2,7-dihydroxynaphthazarin (mompain), sea urchin pigments, and their O-methyl ethers by the action of ammonia solutions in H2O and MeOH under mild conditions was studied. The predominant direction of the reactions of all substrates with NH3 was the 1,2-addition of the nucleophile to the C-O group at position 1 of the
Direct Amination of Naphthazarin, Juglone, and Some Derivatives
作者:Alberto Arnone、Lucio Merlini、Gianluca Nasini、Orso Vajna de Pava
DOI:10.1080/00397910701462864
日期:2007.8
Abstract Mono‐ and diamino‐derivatives of naphthazarin, 2‐methoxynaphthazarin, juglone and their methylethers were prepared by reaction with ammonia. The structure of the products was established by NMR studies. Some compounds were tested for cytotoxic activity.