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    • 3. 发明授权
    • Thiaprostaglandin E.sub.1 derivatives, process for production thereof,
and pharmaceutical use thereof
    • Thiaprostaglandin E1衍生物,其制备方法及其药物用途
    • US4466980A
    • 1984-08-21
    • US316902
    • 1981-10-30
    • Toshio TanakaTakeshi ToruTakeo ObaNoriaki OkamuraKenzo WatanabeKiyoshi BannaiAtsuo HazatoSeizi KurozumiFukuyoshi KamimotoAkira Ohtsu
    • Toshio TanakaTakeshi ToruTakeo ObaNoriaki OkamuraKenzo WatanabeKiyoshi BannaiAtsuo HazatoSeizi KurozumiFukuyoshi KamimotoAkira Ohtsu
    • C07C405/00C07D309/12C07C177/00A61K31/557
    • C07C405/0033C07D309/12
    • A novel compound selected from the group consisting of 7-(or 6- or 4-)thiaprostaglandin E.sub.1 derivatives of the formula (I). ##STR1## wherein A represents --CH.sub.2 -- or ##STR2## in which n is 0, 1 or 2, provided that only one A cut of three is ##STR3## R.sup.1 -R.sup.7 and G are as defined in the specification, the 15-epimers of said thiaprostaglandin E.sub.1 derivatives, the enatiomers of said thiaprostaglandin E.sub.1 derivatives or their 15-epimers, and mixtures of these compounds.A 7-thiaprostaglandin E.sub.1 derivative and/or its optical isomer may be prepared by reacting a 2-organo-2-cyclopentenone (II) with an organic copper-lithium compound (III) to effect conjugation reaction. A 6-thiaprostaglandin E.sub.1 derivative and/or its optical isomer may be prepared by subjecting an .alpha.,.beta.-unsaturated ketone (IV) and a thiol (V) to the Michael addition reaction. And, 4-thiaprostaglandin derivative and/or its optical isomer may also be prepared by the Michael addition reaction from a 2-allyl substituted cyclopentanone (VI) and a thiol (VIII).Some compounds ((I)-1) amongst the compounds of the formula (I) and/or their optical isomer are useful for controlling vascular actions such as angina pectoris, vasodilation etc.
    • 选自式(I)的7-(或6-或4-)赖氨酸前列腺素E1衍生物的新化合物。 (I)其中A表示-CH 2 - 或,其中n为0,1或2,条件是三个只有一个A切割是R 1 -R 7,G如说明书中所定义, 所述thiaprostaglandin E1衍生物的15-差向异构体,所述thiaprostaglandin E1衍生物或它们的15-差向异构体的对映体,以及这些化合物的混合物。 7-硫代前列腺素E1衍生物和/或其旋光异构体可以通过2-有机-2-环戊烯酮(II)与有机铜 - 锂化合物(III)反应来制备共轭反应。 6-硫代前列腺素E1衍生物和/或其旋光异构体可以通过使α,β-不饱和酮(IV)和硫醇(V)进行迈克尔加成反应来制备。 并且,也可以通过从2-烯丙基取代的环戊酮(VI)和硫醇(VIII)的迈克尔加成反应制备4-硫代前列腺素衍生物和/或其旋光异构体。 式(I)化合物和/或其旋光异构体中的一些化合物((I)-1)可用于控制血管作用,例如心绞痛,血管舒张等。
    • 5. 发明授权
    • 3-Methylene cephalosporanic acid derivatives and process for preparation
thereof
    • 3-亚甲基头孢菌酸衍生物及其制备方法
    • US4138553A
    • 1979-02-06
    • US841321
    • 1977-10-11
    • Sachio IshimotoHisao YamaguchiYoshinori KatoTakeo ObaKenji OzawaYataro IchikawaKoji NakagawaHideki Tsuruta
    • Sachio IshimotoHisao YamaguchiYoshinori KatoTakeo ObaKenji OzawaYataro IchikawaKoji NakagawaHideki Tsuruta
    • C07D499/00C07D501/10C07D501/02
    • C07D499/00Y02P20/55
    • Novel substituted hydrazide derivatives of 7-(substituted)amino-3-methylene-cepham-4-carboxylic acids expressed by the formula ##STR1## wherein R.sub.1 represents alkyl containing at least 3 carbon atoms, cycloalkyl, or optionally substituted aryl, and one of R.sub.2 and R.sub.3 represents hydrogen with the other being hydrogen or the same as R.sub.1 ; or R.sub.1 and R.sub.2 form a heterocyclic ring optionally through a hetero atom together with the attached nitrogen and R.sub.3 represents hydrogen atom; and Z.sub.1 represents amino or protected amino; and acid addition salts thereof, which are useful as intermediates for synthesizing cephalosporin antibiotics. These compounds can be prepared in high yields from the corresponding substituted hydrazide derivatives of 6-substituted amino-1-oxide-2, 2-dimethyl-penam-3-carboxylic acids, which are readily available at low costs, by heating them in the presence of a thermal rearrangement promotor such as organic sulfonic acids and optionally in the further presence of a tertiary nitrogen-containing cyclic compound, followed if desired by splitting off the amino-protecting group and converting the product to acid addition salts.
    • 由式“IMAGE”表示的7-(取代的)氨基-3-亚甲基 - 头孢烯-4-羧酸的新型取代的酰肼衍生物,其中R 1表示含有至少3个碳原子的烷基,环烷基或任选取代的芳基, R2和R3代表氢,另一个是氢或与R1相同; 或R 1和R 2与所连接的氮一起任选地通过杂原子形成杂环,并且R 3表示氢原子; Z1表示氨基或被保护的氨基; 其酸加成盐,其可用作合成头孢菌素抗生素的中间体。 这些化合物可以以相当于6-取代的氨基-1-氧化物-2,2-二甲基 - 对甲苯磺酸的取代的酰肼衍生物的高收率制备,它们以低成本容易获得,通过在 存在热重排促进剂如有机磺酸,并且任选地在另外存在叔氮气环状化合物的情况下,如果需要的话,分解氨基保护基并将产物转化成酸加成盐。
    • 7. 发明授权
    • Magnetic tape cassette having reel locks controlled by an optical tape
end detecting element
    • 具有由光带末端检测元件控制的卷轴锁的磁带盒
    • US4918558A
    • 1990-04-17
    • US287155
    • 1988-12-21
    • Tadao IgarashiTakashi OtaTakeo Oba
    • Tadao IgarashiTakashi OtaTakeo Oba
    • G11B23/087
    • G11B23/08714G11B23/08721
    • A magnetic tape cassette comprises a compact reel lock mechanism which includes a pair of reel lock arms engaging with outer peripheries of a pair of tape reels, a sliding member serving as a cover for a single opening through which an end of an optical tape end detecting element is inserted into the cassette casing, a cam member which provided on the sliding member for rotating the pair of reel lock arms, and a guide member guiding said sliding member. When the tape cassette is out of a recording and/or reproducing apparatus, the single opening is closed by the sliding member and the reel lock arms restrict rotation of reels. Conversely, when the tape cassette is inserted into the recording and/or reproducing apparatus, the sliding member is pushed up by the end of the optical detecting element and as a result the cam member moves upward along with said sliding member. The opening, therefore, becomes open, and simultaneously the cam member releases engagement between the reel lock arms and the peripheries of tape reels.
    • 一种磁带盒包括一个紧凑的卷轴锁定机构,该机构包括与一对磁带盘的外周啮合的一对卷轴锁定臂,用作单个开口的盖子的滑动部件,通过该滑动部件检测光带端部的一端 元件插入盒壳体中,设置在用于使一对卷轴锁定臂旋转的滑动构件上的凸轮构件和引导所述滑动构件的引导构件。 当磁带盒离开记录和/或再现装置时,单个开口由滑动构件封闭,并且卷轴锁定臂限制卷轴的旋转。 相反,当磁带盒插入记录和/或重放装置时,滑动件被光学检测元件的一端向上推,结果凸轮件随着滑动件向上移动。 因此,开口变得开放,同时凸轮构件释放卷轴锁定臂与磁带卷轴的周边之间的接合。