Synthesis of zearalanes II and related compounds and intermediates useful in the syntheses thereof
    1.
    发明授权
    Synthesis of zearalanes II and related compounds and intermediates useful in the syntheses thereof 失效
    玉米淀粉II及其合成中可用的相关化合物和中间体的合成

    公开(公告)号:US3903115A

    公开(公告)日:1975-09-02

    申请号:US44586074

    申请日:1974-02-26

    Abstract: This invention provides a new synthesis for norzearalane II and related compounds which related compounds and norzearalane II are represented by the formula

    where X is an integer having a value from 1 to 13 inclusive. The anabolic agent norzearalane II, in which X 9 in the foregoing formula, is prepared by a total chemical synthesis involving the reaction of 10-undecenal with malonic acid to produce trans-2,12-tridecadienoic acid; treating the acid so formed with diazomethane to yield methyl trans-2,12tridecadienoate; reacting the methyl ester with ethyl acetoacetate and sodium ethoxide to form the sodium salt of ethyl 6-(9-decenyl)- Beta -dihydroresorcylate; brominating the dihydroresorcylate to prepare ethyl 3-bromo-6-(9-decenyl)- Beta dihydroresorcylate; de-hydrobrominating the foregoing bromo derivative to give ethyl 6-(9-decenyl)- Beta -resorcylate; reacting the resorcylate ester with benzyl chloride to produce ethyl 6-(9-decenyl)- Beta -resorcylate dibenzyl ether; subjecting the benzylated ester to the action of diborane, water and hydrogen peroxide to form ethyl 2,4-bis(benzyloxy)-6-(10hydroxydecyl)-benzoate; treating the foregoing benzoate with sodium ethoxide to prepare norzearalane II dibenzyl ether, and also to prepare as a by-product the dimeric dilactone of 2,4bis(benzyloxy)-6-(10-hydroxydecyl)-benzoic acid; hydrogenating norzearalane II dibenzyl ether to form norzearalane II.

    Abstract translation: 本发明提供了新月桂酸二异氰酸酯和相关化合物的新合成物,其中相关化合物和犹比达烷II由式OH O | PARALLEL C ANGLE O | CH 2 | ANGLE HO(CH 2)X表示,其中X是具有从1到 13包含

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