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公开(公告)号:US4973684A
公开(公告)日:1990-11-27
申请号:US203410
申请日:1988-06-07
申请人: Michihiko Ochiai , Taiiti Okada , Osamu Aki , Akira Morimoto , Kenji Kawakita , Yoshihiro Matsushita
发明人: Michihiko Ochiai , Taiiti Okada , Osamu Aki , Akira Morimoto , Kenji Kawakita , Yoshihiro Matsushita
IPC分类号: C07D277/20 , C07D277/32 , C07D277/34 , C07D277/38 , C07D277/40 , C07D277/46 , C07D277/48 , C07D499/46 , C07D499/58 , C07D501/20 , C07D501/24 , C07D501/34 , C07D501/36 , C07D501/46
CPC分类号: C07D277/20 , C07D277/34 , C07D277/40 , C07D277/46 , C07D277/48 , C07D277/587
摘要: Broad spectrum antibiotics are provided which are compounds of the formula: ##STR1## wherein R.sup.4 is a residue of a nucleophilic compound and R.sup.5 is hydroxyl or protected hydroxyl; or a pharmaceutically acceptable salt or ester thereof.
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公开(公告)号:US4912212A
公开(公告)日:1990-03-27
申请号:US203409
申请日:1988-06-07
申请人: Michihiko Ochiai , Taiiti Okada , Osamu Aki , Akira Morimoto , Kenji Kawakita , Yoshihiro Matsushita
发明人: Michihiko Ochiai , Taiiti Okada , Osamu Aki , Akira Morimoto , Kenji Kawakita , Yoshihiro Matsushita
IPC分类号: C07D277/20 , C07D277/32 , C07D277/34 , C07D277/38 , C07D277/40 , C07D277/46 , C07D277/48 , C07D499/46 , C07D499/58 , C07D501/20 , C07D501/24 , C07D501/34 , C07D501/36 , C07D501/46
CPC分类号: C07D277/20 , C07D277/34 , C07D277/40 , C07D277/46 , C07D277/48 , C07D277/587
摘要: Broad spectrum antibiotics are provided which are compounds of the formula: ##STR1## wherein -W-R is a residue of a nucleophilic compound and R.sup.5 is hydroxyl or protected hydroxyl, or a pharmaceutically acceptable salt or 4-carboxy ester which is the alkoxymethyl, .alpha.-alkoxyethyl, .alpha.-alkoxy-.alpha.-substituted methyl, alkylthiomethyl, acyloxymethyl or .alpha.-acyloxy-.alpha.-substituted methyl ester thereof.
摘要翻译: 提供了广谱抗生素,它们是下式的化合物:其中-WR是亲核化合物的残基,R5是羟基或被保护的羟基,或药学上可接受的盐或作为烷氧基甲基的α-羧酸酯, 烷氧基乙基,α-烷氧基-α-取代甲基,烷硫基甲基,酰氧基甲基或其α-烯丙氧基-α-取代的甲基酯。
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公开(公告)号:US3994269A
公开(公告)日:1976-11-30
申请号:US600806
申请日:1975-07-31
申请人: Hiroyuki Takaoka , Osamu Aki , Kazuhiro Kaneko
发明人: Hiroyuki Takaoka , Osamu Aki , Kazuhiro Kaneko
CPC分类号: F02D37/02 , F02M26/57 , F02P5/103 , F02M2026/004 , F02M2026/009 , Y10T137/86919
摘要: The multistep fluid control valve comprises a valve case having a plurality of valve seats. A valve stem is provided in the valve case and is capable of being continuously or stepwise displaced axially. At least one valve body is shiftably mounted on the valve stem it is urged toward the corresponding one of the valve seats, but normally arrested at a position clear of the valve seat. This valve body closes the valve seat when the valve stem is moved a predetermined amount. At least one further valve body is provided axially in line with the valve stem so as to cooperate with a corresponding one of the valve seats. The further valve body is actuated by a further stepwise movement of the valve stem so that the corresponding valve seat is opened or closed by the further valve body.
摘要翻译: 多级流体控制阀包括具有多个阀座的阀壳。 阀杆设置在阀壳体中,并能够轴向连续或逐步移位。 至少一个阀体可移动地安装在阀杆上,其被推向相应的一个阀座,但通常在远离阀座的位置处停止。 当阀杆移动预定量时,该阀体关闭阀座。 至少一个另外的阀体沿轴向设置在阀杆上,以便与相应的一个阀座配合。 另外的阀体通过阀杆的进一步的逐步移动来致动,使得相应的阀座由另外的阀体打开或关闭。
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