H. Toshima et al., Syntheses and potato tuber-inducing activities of unnatural long-chain OPC-9 : 0 and OPC-10 : 0, BIOS BIOT B, 63(8), 1999, pp. 1484-1487
The unnatural long-chain OPCs, OPC-9:0 and OPC-10:0, were respectively synt
hesized from the ethyl eaters of OPC-7:0 and OPC-8:0, C-2-carbon elongation
was achieved via alkylation of the enolate of tert-butyl acetate. The pota
to tuber-inducing activity of OPC-10:0, as well as OPC-8:0, -6:0 and -4:0,
was similar to that of jasmonic acid. OPC-9:0 also exhibited weak tuber-ind
ucing activity.