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    • 8. 发明授权
    • New intermediates for the preparation of 13-thiaprostaglandin derivatives
    • 制备13-thiaprostaglandin衍生物的新中间体
    • US4733011A
    • 1988-03-22
    • US767015
    • 1985-08-19
    • Bernhard RieflingHans-Eckart Radunz
    • Bernhard RieflingHans-Eckart Radunz
    • C07C323/22A61K31/557C07C67/00C07C313/00C07C401/00C07C405/00C07D307/935C07D309/12C07C177/00
    • C07D307/935C07C323/00C07C405/0033C07D309/12C07C2102/20Y02P20/55
    • Compounds of the formula ##STR1## wherein A is C--C single bond, --CH.sub.2 --, --CH(CH.sub.3)--, --C(CH.sub.3).sub.2 --, --CH.sub.2 --CH.sub.2 --, CH(CH.sub.3)CH.sub.2 --, --C(CH.sub.3).sub.2 CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 -- or --CH.sub.2 O--; R.sup.1a and R.sup.1 each independently is hydrogen or a protective group which can be cleaved by solvolysis or by hydrogenolysis; R.sup.2 is H or alkyl of 1 to 3 C atoms; R.sup.3 is alkyl of 3 to 5 C atoms, phenyl or phenyl which is monosubstituted to trisubstituted by F, Cl, OH, OCH.sub.3, OC.sub.2 H.sub.5, CF.sub.3 or alkyl of 1 to 3 C atoms, or, when A is not --CH.sub.2 O--, can also be pyridyl, thienyl, naphthyl or alkoxy of 1 to 4 C atoms; indicates a bond in the .beta.-position and wavy line ( ) means that the bond can be in the .alpha.- or .beta.-position, are valuable intermediates for the stereospecific preparation of 13-thiaprostaglandin derivatives. The latter are prepared by U.V. irradiation of the former to first prepare the corresponding 2-oxa-3-OH-6-alkylthio-7-OH-1,5-bicyclo(3.3.0)octane derivative, which is then exposed to a Wittig reaction and, optionally, hydrogenation or oxidation inter alia to prepare members of the F.sub.1 -, F.sub.2 -, E.sub.1 - and E.sub.2 series.
    • 其中A是CC单键,-CH 2 - , - CH(CH 3) - , - C(CH 3)2 - , - CH 2 -CH 2 - ,CH(CH 3)CH 2 - , - C(CH 3) )2CH2-,-CH2-CH2-CH2-或-CH2O-; R1a和R1各自独立地为氢或可通过溶剂解或氢解裂解的保护基; R2是H或1〜3个C原子的烷基; R3是3至5个C原子的烷基,苯基或被F,Cl,OH,OCH 3,OC 2 H 5,CF 3或1至3个C原子的烷基单取代至三取代的苯基,或者当A不是-CH 2 O-时,可以 也可以是1至4个C原子的吡啶基,噻吩基,萘基或烷氧基; 表示β位和波浪线()中的键,表示该键可以是α-或β-位,是13-季前列腺素衍生物的立体特异性制备的有价值的中间体。 后者由U.V. 照射前者,首先制备相应的2-氧杂-3-羟基-6-甲硫基-7-OH-1,5-双环(3.3.0)辛烷衍生物,然后将其暴露于维蒂希反应,任选地, 氢化或氧化,特别是制备F1-,F2-,E1-和E2系列的成员。