Synthesis and isolation of nitro-bT-carbolines obtained by nitration of commercial β-carboline alkaloids
作者:María A. Ponce、Rosa Erra-Balsells
DOI:10.1002/jhet.5570380510
日期:2001.9
Nitration of commercial full aromatic β-carboline alkaloids nor-harmane (1), harmane (2), harmine (3), harmol (4), and the 7-acetylated derivative of harmol (5) is described. Advantages and disadvantages of different nitration reagents which involve acidic conditions (HNO3/H+) and neutral conditions (Cu(NO3)2; ceric ammonium nitrate) are discussed. A complete 1H and 13C-nmr characterization including
商用全芳香族β咔啉生物碱的硝化也不-harmane(1),harmane(2),去氢(3),harmol(4),和7-乙酰化衍生物harmol(的5)进行说明。讨论了涉及酸性条件(HNO 3 / H +)和中性条件(Cu(NO 3)2;硝酸硝酸铵)的不同硝化试剂的优缺点。完整的1 H和13给出了C-nmr表征,包括ms以及在中性和酸性介质中的uv吸收光谱。随函附上了详细的ei-ms和ld-tof-ms研究,因为硝基-β-咔啉构成了β-咔啉样生色团的新家族,并有可能在uv-maldi-tof-ms中用作基质。