Novel proton type beta zeolite, preparation method thereof and process for preparing phenol compound using the same
申请人:UBE INDUSTRIES, LTD.
公开号:US20040242938A1
公开(公告)日:2004-12-02
Disclosed are a proton type &bgr; zeolite in which an acid site showing a desorption peak with a range of ±100° C. with a center of 330° C. exists in a spectrum measured by the ammonia temperature programmed desorption method (NH
3
-TPD), and an amount of a strong acid site showing a desorption peak of 500° C. or higher is controlled to 2.5 &mgr;mol/g or less, a method for preparing the same, and a process for preparing a phenol compound by oxidizing a benzene compound with a peroxide in the presence of the proton type &bgr; zeolite.
Modified oligonucleotides for telomerase inhibition
申请人:Gryaznov Sergei
公开号:US20050113325A1
公开(公告)日:2005-05-26
Compounds comprising an oligonucleotide moiety covalently linked to a lipid moiety are disclosed. The oligonucleotide moiety comprises a sequence that is complementary to the RNA component of human telomerase. The compounds inhibit telomerase activity in cells with a high potency and have superior cellular uptake characteristics.
[EN] OLIGONUCLEOTIDE COMPOSITIONS AND METHODS OF MAKING THE SAME<br/>[FR] COMPOSITIONS D'OLIGONUCLÉOTIDES ET LEURS PROCÉDÉS DE PRÉPARATION
申请人:GERON CORP
公开号:WO2015168310A1
公开(公告)日:2015-11-05
The present disclosure provides a solid phase method of making oligonucleotides via sequential coupling cycles including at least one coupling of a dinucleotide dimer subunit to a free 3'-terminal group of a growing chain. The oligonucleotides include at least two nucleoside subunits joined by a N3'→P5' phosphoramidate linkage. The method may include the steps of (a) deprotecting the protected 3' amino group of a terminal nucleoside attached to a solid phase support, said deprotecting forming a free 3' amino group; (b) contacting the free 3' amino group with a 3'-protected amino-dinucleotide-5'-phosphoramidite dimer in the presence of a nucleophilic catalyst to form an internucleoside N3'→P5' phosphoramidite linkage; and (c) oxidizing (e.g., sulfurizing) the linkage. The compositions produced by the subject methods may include a reduced amount of one or more (N-x) oligonucleotide products. Also provided are pharmaceutical compositions including the subject oligonucleotide compositions.
The present disclosure relates to RNA amidates and thioamidates useful for RNA interference applications. The RNA amidates and thioamidates contain at least one internucleoside linkage chosen from ribo-N3′→P5′ phosphoramidate (NP) and ribo-N3′→P5′ thiophosphoramidate (NPS) linkages, and optionally further containing at least one covalently conjugated lipid moiety. Compositions comprising the amidates and thioamidates are disclosed, as are methods for their use in modulating gene expression.
Nouvelle Zéolite Beta de type protonique, son procédé de préparation et procédé de préparation de composés phénoliques la mettant en oeuvre
申请人:Ube Industries, Ltd.
公开号:EP1481730A1
公开(公告)日:2004-12-01
L'invention est relative à une zéolite β de type protonique comportant un site acide présentant un pic de désorption dans une gamme de ± 100°C avec un centre à 330°C, selon un spectre mesuré par la méthode de désorption à l'ammoniaque à température programmée (TPD-NH3), et une quantité de site acide fort présentant un pic de désorption à une température d'au moins 500°C inférieure ou égale à 2,5 µmole/g, à son procédé de préparation, ainsi qu'à un procédé de préparation d'un composé phénolique consistant à oxyder un composé benzénique avec un peroxyde en présence de ladite zéolite β de type protonique.