Upon lithiation with LDA, 2', 3'-O-isopropylidene-5'-O-methoxymethyl-5, 6-dihydrouridine has been shown to serve as an "amide α-anion". Thus, acylation of the resulting dianion took place regiospecifically at the C-5 position. The subsequent phenylselenenylation and oxidative elimination afforded 5-acyluridines.
[EN] BIOMEDICAL DEVICE IMPLANTABLE IN BONE AND/OR CARTILAGINOUS TISSUE, AND CORRESPONDING METHOD TO MANUFACTURE SAID BIOMEDICAL DEVICE<br/>[FR] DISPOSITIF BIOMÉDICAL IMPLANTABLE DANS L'OS ET/OU LE TISSU CARTILAGINEUX, ET PROCÉDÉ CORRESPONDANT POUR FABRIQUER LEDIT DISPOSITIF BIOMÉDICAL
申请人:GALLI CARLO
公开号:WO2014128289A1
公开(公告)日:2014-08-28
Aptamers for use in coating biomaterials, in particular for example for making biomedical devices which can be implanted in tissue, or tissue implants, corresponding method for coating biomaterials using aptamers and method for making biomedical devices which can be implanted in tissue, or tissue implants.
Lithiation of 5,6-dihydrouridine: a new route to 5-substituted uridines
phenylselenenyl group at the C-5 of 2 appeared to be effective. Alkylation of its α-selenenyl carbanion and subsequent generation of 5,6-double bond produced 5-alkyluridines. These routes constitute a new entry to 5-substituted uridines.