Novel Acyclic Amide-Conjugated Nucleosides and Their Analogues
摘要:
An effective one-step synthesis of new amide-conjugated nucleosides and their analogues, in the presence of 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMT-MM) as the condensing agent, is presented. Substrate subunits carrying carboxylic group were obtained by acidic hydrolysis of Michael-type adducts of various 5-substituted uracil derivatives to methyl acrylate. Amine substrate was synthesized by reduction of 1-(2'-cyanoethyl)thymine with sodium borohydride in the presence of nickel (II) chloride as catalyst. Other applied amine substrates were 5'-amino-5'-deoxythymidine and 5-aminouracil.
Rapid access with diversity to enantiopure flexible PNA monomers following asymmetric orthogonal strategies
作者:Carlos T. Nieto、Mateo M. Salgado、Sara H. Domínguez、David Díez、Narciso M. Garrido
DOI:10.1016/j.tetasy.2014.06.002
日期:2014.7
Different synthetic procedures are described in the rapid elaboration of flexible PNA monomers based on the 6-amino-8-base-octanoate and 5-amino-7-base-heptanoate scaffolds. Asymmetric Aza-Michael monoaddition is successfully applied to starting materials derived from sebacic/azelaic long-chain diacids and 6-membered oxacyclohexane commercial derivatives. Chain length, orthogonality of the ester functionalities
Boncel; Walczak, Polish Journal of Chemistry, 2007, vol. 81, # 12, p. 2151 - 2156
作者:Boncel、Walczak
DOI:——
日期:——
US6232318B1
申请人:——
公开号:US6232318B1
公开(公告)日:2001-05-15
[EN] PYRIMIDINEDIONE DERIVATIVES USEFUL AS ALPHA 1A ADRENOCEPTOR ANTAGONISTS<br/>[FR] DERIVES DE LA PYRIMIDINEDIONE, ANTAGONISTES DE L'ADRENOCEPTEUR ALPHA 1A
申请人:MERCK & CO INC
公开号:WO2000029386A1
公开(公告)日:2000-05-25
Novel pyrimidinedione compounds and pharmaceutically acceptable salts thereof are disclosed. The synthesis of these compounds and their use as alpha 1a adrenergic receptor antagonists is also described. One application of these compounds is in the treatment of benign prostatic hyperplasia. These compounds are selective in their ability to relax smooth muscle tissue enriched in the alpha 1a receptor subtype without at the same time inducing hypotension. One such tissue is found surrounding the urethral lining. Therefore, one utility of the instant compounds is to provide acute relief to males suffering from benign prostatic hyperplasia, by permitting less hindered urine flow. Another utility of the instant compounds is provided by combination with a human 5-alpha reductase inhibitory compound, such that both acute and chronic relief from the effects of benign prostatic hyperplasia can be achieved.