Compounds useful as antiproliferative agents, including, for example, anticancer agents, are provided according to formula I: wherein: Ar, X, X.sup.1, g, R and R.sup.3 are as defined herein.
Compounds useful as antiproliferative agents, including, for example, anticancer agents, are provided according to formula (I); wherein: X, X.sup.1, X.sup.2, R.sup.a, R.sup.1, R.sup.2,R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, g, M, y, a, b, d, e, V, W, Z and Q are as defined herein.