Synthesis of a series of Homopterocarpane derivatives with potential antitumor and anti-AIDS activity.

The synthesis of a series of derivatives related to (+/-) cis 6a, 12a-dihydro-6H,7H-[1]-benzopyrano-[4,3-b]-[1]-benzopyran (Homopterocarpane) is described. The synthesized derivatives have been tested at National Cancer Institute in its in vitro anti-cancer and anti-AIDS screening programs. The synthesized compounds are inactive in anti-HIV assay, while some show a GI50 < 100 microM (and < 50 microM in several cell lines) in NCI antitumor screening.