Examination of the role of the duocarmycin SA methoxy substituents: Identification of the minimum, fully potent DNA binding subunit
作者:Dale L. Boger、Bernd Bollinger、Douglas S. Johnson
DOI:10.1016/0960-894x(96)00401-5
日期:1996.9
The preparation and examination of 4-7 revealed that (+)-5 and (+)-duocarmycin SA were indistinguishable. In contrast, 6 and 7 exhibited properties more analogous to 4 illustrating that the C6 and C7 methoxy substituents of duocarmycin SA contribute little or nothing to its properties. Thus, the C5 methoxy substituent of the 5,6,7-trimethoxyindole subunit of duocarmycin SA is necessary and sufficient for observation of the full potency of the natural product. Copyright (C) 1996 Elsevier Science Ltd