摘要:
Through newly adapted methodology, 2-methyl-3H-quinazolin-4-one was activated using a number of methods followed by displacement to afford 4-aminoquinazolines. The most useful of these processes utilize the p-toluenesulfonate ester or I-2/PPh3 activation. Using this methodology, the anticancer vascular targeting clinical candidate verubulin (1) was synthesized in a highly efficient manner.