Oligostilbenes from resveratrol

I-B group Oligostilbenes are polymerized directly from resveratrol monomers but do not contain any oxygen heterocyclic ring in their structures, such as ampelopsis D (21) [11]. Until now, 20 oligomers of this group have been found in plants. 

Resveratrol (3,5,4 -trihydroxystilbene) is a natural component of certain foods, such as grapes, has been shown to have anti-HSV activities in vitro and in vivo (Fig. 3.6 Docherty et al. 2004, 2005). Moreover, resveratrol was found to inhibit varicella-zoster virus (VZV) replication in a dose-dependent and reversible manner (Docherty et al. 2006). Two oligostilbenes dibalanocarpol and balanocarpol isolated from the leaves of Hopea malibato exhibited very modest HIV-inhibitory activity in vitro (Dai et al. 1998). 

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