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    • 2. 发明授权
    • Preparation of 4-aza-17-substituted-5.alpha.-androstan-3-ones useful as
5.alpha.-reductase inhibitors
    • 可用作5α-还原酶抑制剂的4-氮杂-17-取代-5α-雄甾烷-3-酮的制备
    • US4220775A
    • 1980-09-02
    • US20372
    • 1979-03-15
    • Gary H. RasmussonDavid B. R. JohnstonDonald F. ReinholdTorleif UtneRonald B. Jobson
    • Gary H. RasmussonDavid B. R. JohnstonDonald F. ReinholdTorleif UtneRonald B. Jobson
    • C07C62/24C07J1/00C07J3/00C07J21/00C07J33/00C07J41/00C07J43/00C07J73/00C07D221/18
    • C07J43/003C07C62/24C07J1/0022C07J21/00C07J3/005C07J33/007C07J41/0016C07J41/0066C07J73/005C07C2103/16Y10S514/859
    • A method of preparing a compound of the formula: ##STR1## where Formula (I) may also have the structure of partial Formula (III); wherein, ##STR2## R' is hydrogen or methyl; R" is hydrogen or .beta.-methyl;R'" is .beta.-methyl or hydroxy;Z is (1) oxo;(2) .beta.-hydrogen and .alpha.-hydroxy; or .alpha.-hydrogen or .alpha.-hydroxyl and(3) (Y).sub.n Q where n=0 or 1, Y is a straight or branched hydrocarbon chain of 1 to 12 carbon atoms andQ is ##STR3## where R.sup.8 is, ##STR4## where the dashed bond replaces the 17.alpha. hydrogen; (6) cyano; or(7) tetrazolyl;and pharmaceutically acceptable salts of the above compounds;CHARACTERIZED IN THAT(I.) a compound of the formula: ##STR5## , where A has the meanings above except --CH.dbd.CH--, is (1) treated with an oxidizing agent at reduced temperatures to form the corresponding 5-oxo-3,5-seco-androstan-3-oic acid compound;(2) treating the product of step (1) with an amine of formula: R.sup.1 NH.sub.2 to form the corresponding 4-aza-5-androsten-3-one compound substituted in the 4-position with R.sup.1 ; and(3) treating the product of step (2) with hydrogen under catalytic conditions to form the compound of Formula I and I & II wherein B is ##STR6## (II.) and where it is desired to prepare compounds of Formula I wherein B is ##STR7## additionally carrying out the following steps on the products prepared by the procedures in (I.) above:(1) alkylating the lactim carbonyl by treating it with trialkyloxonium tetrafluoroborate to form the corresponding alkyl iminium ether, i.e., the compound of Formula I where B is as above and R.sup.4 =OR.sup.5 ;(2) treating the product of step (1) with an amine of formula HNR.sup.6 R.sup.7 followed by treatment with a mineral acid to form the compound of Formula I where B is as above and R.sup.4 =NR.sup.6 R.sup.7 ;(III.) and where it is desired to prepare compounds of Formula I wherein A is --CH.dbd.CH--, additionally carrying out the following steps on the products prepared by the procedures in (I.) above:(1) treating the 1,2 saturated compound with lithium diisopropyl amide to form the corresponding enolate;(2) treating the enolate of step (1) in situ with diphenyldisulfide to form the corresponding .alpha.-phenylthio compound;(3) oxidizing the product of step (2) to form the corresponding sulfoxide compound; and(4) heating the product of step (3) to form the compound of Formula I wherein A is --CH.dbd.CH--.
    • 制备下式化合物的方法:其中式(I)还可以具有部分式(III)的结构; 其中,A为(1)CH 2 CH 2; (2)CHCH; R图像是氢或甲基; R“是氢或β-甲基; R“'是β-甲基或羟基; Z是(1)氧代; (2)β-氢和α-羟基; 或(3)(Y)n Q其中n = 0或1,Y为1至12个碳原子的直链或支链烃链,Q为(a)其中R8为 (4)(5)其中虚线键代替17α氢; (6)氰基; 或(7)四唑基;