Abstract:
An object of the present invention is to provide a useful and novel phosphoramidite compound for the synthesis of oligo-RNA.A phosphoramidite compound represented by general formula (1), wherein: BX represents a nucleobase optionally having a protecting group; and R1 is a substituent represented by general formula (2), wherein: R11, R12 and R13 are the same or different and each represents hydrogen or alkoxy; R2a and R2b are the same or different and each represents alkyl, or R2a and R2b taken together with the adjacent nitrogen atom may form a 5- to 6-membered saturated amino cyclic group, the amino cyclic group optionally having an oxygen or sulfur atom as a ring-composing member in addition to the adjacent nitrogen atom; and WG1 and WG2 are the same or different and each represents an electron-withdrawing group.
Abstract:
The present invention provides a chain-shortened polynucleotide wherein the proportion of a 2′-5′ phosphodiester bond is up to 3% based on the whole phosphodiester bonds or a salt thereof and a pharmaceutical composition containing the same, and a method for producing the same.
Abstract:
An object of the present invention is to provide a useful and novel phosphoramidite compound for the synthesis of oligo-RNA. A phosphoramidite compound represented by general formula (1), wherein: BX represents a nucleobase optionally having a protecting group; and R1 is a substituent represented by general formula (2), wherein: R11, R12 and R13 are the same or different and each represents hydrogen or alkoxy; R2a and R2b are the same or different and each represents alkyl, or R2a and R2b taken together with the adjacent nitrogen atom may form a 5- to 6-membered saturated amino cyclic group, the amino cyclic group optionally having an oxygen or sulfur atom as a ring-composing member in addition to the adjacent nitrogen atom; and WG1 and WG2 are the same or different and each represents an electron-withdrawing group.
Abstract:
This invention relates to a magnetic recording powder having a low Curie temperature and a high saturation magnetization (.sigma.s). The magnetic recording powder of this invention is of a composite oxide having a hexagonal ferrite type crystal structure comprises: (a) between 14 and 20 atomic % of at least one of strontium oxide and barium oxide, (b) between 15 and 40 atomic % of chromium oxide, (c) between 2 and 15 atomic % of at least one member of the group consisting of zinc oxide, magnesium oxide and copper oxide, (d) between 2 and 15 atomic % of at least one member of the group consisting of titanium oxide, zirconium oxide and tin oxide, with substantial remainder being iron oxide and unavoidable impurities. Further, the magnetic recording powder of this invention is of a composite oxide having saturation magnetization (.sigma.s) of 15 emu/g or higher, and a Curie temperature (Tc) of 155.degree. C. or lower.
Abstract:
A magnetic recording powder for use as a material for magnetic recording media including magnetic tapes and magnetic cards, the powder having a high coercive force at room temperatures and a low Curie point, consists of at least one element selected from the group consisting of Y and rare-earth elements (R): 5-20 atomic %, B: 5-20 atomic %, Mn: 4-20 atomic %; and Fe and inevitable impurities: the balance. If required, the powder may further contain Al: 1-10 atomic %, and/or Cr: 1-10 atomic %. The powder has a mean particle size of 0.5-2 .mu.m and a mean crystal grain size of 0.1-0.4 .mu.m.
Abstract:
Provided are a sputtering target for forming a magnetic recording medium film, on which a film having a low ordering temperature can be formed and which can suppress generation of particles, and a method for producing the same. The sputtering target for forming a magnetic recording medium film consists of a sintered body having a composition represented by the general formula: {(FexPt100-x)(100-y)Agy}(100-z)Cz, wherein x, y, and z are represented by atomic percent as 30≦x≦80, 1≦y≦30, and 3≦z≦63. Also, the method for producing the sputtering target has a step of hot pressing a mixed powder of AgPt alloy powder, FePt alloy powder, Pt powder, and graphite powder or carbon black powder in a vacuum or an inert gas atmosphere.
Abstract translation:提供一种用于形成磁记录介质膜的溅射靶,其上可以形成具有低有序温度的膜并且可以抑制颗粒的产生及其制造方法。 用于形成磁记录介质膜的溅射靶由具有由以下通式表示的组成的烧结体构成:{(FexPt100-x)(100-y)Agy}(100-z)Cz,其中x,y和 z由原子百分数表示为30 @ x @ 80,1 @ y @ 30和3 @ z @ 63。 此外,溅射靶的制造方法具有在真空或惰性气体气氛中热压AgPt合金粉末,FePt合金粉末,Pt粉末,石墨粉末或炭黑粉末的混合粉末的工序。
Abstract:
The present invention provides a chain-shortened polynucleotide wherein the proportion of a 2′-5′ phosphodiester bond is up to 3% based on the whole phosphodiester bonds or a salt thereof and a pharmaceutical composition containing the same, and a method for producing the same.
Abstract:
A burglar detection apparatus has a tag 11 that includes a resonance circuit. The tag is preferably contained with an object 15 whose theft is desired to be detected. The tagged object may be placed in a drawer 14 which is contained in a box 13. A tag detection sensor 16 is installed in the box and detects whether the tag 11 is present in the drawer 14. Also, a drawer sensor 17 detects whether the drawer is opened. Based on respective detection outputs of the tag detection sensor 16 and the drawer sensor 17, a control circuit 19 controls an alarm 18. Advantageously, the apparatus can be installed in a comparatively small space, does not malfunction even if subjected to large amounts of electrical noise, and reliably detects the presence or absence of a tag even if the tag is located near a metal object.
Abstract:
The present invention to novel nociceptin receptor agonists which are peptide derivatives represented by the following general formula (1): (in which A is alkylene, —CH2)nCO— or a group expressed by the following formula (2) or (3): wherein n represents an integer of 1 to 8; X and Y are same or different and each represents —CONH— or —CH2NH—; R1, R2 and R3 are same or different and each represents alkyl, aryl or heteroaryl; Z represents —CON(R4)R5 or —CH2N(R4)R5; R4 and R5 are same or different and each represents hydrogen, alkyl, aryl or heteroaryl) or a pharmaceutically acceptable salt thereof. A pharmaceutical composition according to the present invention is useful as a nociceptin receptor agonist.
Abstract translation:本发明涉及由以下通式(1)表示的肽衍生物的新的伤害感受激素受体激动剂:(其中A为亚烷基,-CH 2 O 2)n CO- 或由下式(2)或(3)表示的基团:其中n表示1至8的整数; X和Y相同或不同,各自表示-CONH-或-CH 2 NH-; R 1,R 2和R 3相同或不同,各自表示烷基,芳基或杂芳基; Z表示-CON(R 4)R 5或-CH 2 N(R 4)R SUP > 5 SUP>; R 4和R 5相同或不同,各自表示氢,烷基,芳基或杂芳基)或其药学上可接受的盐。 根据本发明的药物组合物可用作伤害感受肽受体激动剂。
Abstract:
The resonance frequency of a resonant circuit section does not change even if the surface of an article whose theft is monitored is formed of any material. An antitheft tag mounted on the article (11) whose theft is monitored includes a resonant circuit section resonating with the radio wave having a particular frequency and transmitted from a transmitting antenna. An electromagnetic shield layer formed of an insulating material is interposed between the mounting surface of the article and the resonant circuit section. The electromagnetic shield layer may be formed of ferrite powder or soft magnetic powder which has a particle size of 10 &mgr;m or less and plastic or rubber or may be formed by laminating a first layer composed of a composite material and a second layer composed of plastic or rubber. Preferably, the soft magnetic powder is any of amorphous alloy, Permalloy, soft magnetic iron, silicon steel, Sendust alloy and Fe—Al alloy.