addition of dialkyl-hydroxymethylphosphonate to the protected 4′,5′-didehydronucleosides resulted in an epimeric mixture of 4′-dialkylphosphonomethoxy derivatives of 2′,5′-dideoxynucleosides, novelanalogues of 2′-deoxynucleoside 5′-monophosphates. Several types of electrophiles (pyridinium tosylate, NIS, NBS, MCPBA and others) were evaluated in addition reactions with 4′,5′-didehydrothymidine. Out
Nucleoside compounds of the formula
wherein:
B is guanine, adenine, thymine, uracil, cytosine, hypoxanthine, xanthine, 5-methylcytosine, 4-ethoxy-5-methyl-2-oxo-pyrimidine, 4-isopropoxy-5-methyl-2-oxo-pyrimidine, or 5-methyl-2-oxo-pyrimidine;
X isHorF;
Y is H, OH, OCH3 or F; and
Z is
where n is zero, one, or three and both R are hydrogen or lower alkyl; or
Y and Z together form a cyclic phosphate ester; and the pharmaceutically acceptable esters, ethers and salts thereof, have been found to have potent antiviral activity with a high therapeutic ratio.
式中的核苷化合物
其中
B 是鸟嘌呤、腺嘌呤、胸腺嘧啶、尿嘧啶、胞嘧啶、次黄嘌呤、黄嘌呤、5-甲基胞嘧啶、4-乙氧基-5-甲基-2-氧代嘧啶、4-异丙氧基-5-甲基-2-氧代嘧啶或 5-甲基-2-氧代嘧啶;
X 是 H 或 F;
Y 是 H、OH、OCH3 或 F;以及
Z 是
其中 n 为 0、1 或 3,两个 R 均为氢或低级烷基;或
Y 和 Z 共同形成环磷酸酯;已发现这些药学上可接受的酯、醚和盐具有很强的抗病毒活性和很高的治疗比例。
AN ENGINEERED CXCL12 ALPHA LOCKED DIMER POLYPEPTIDE
申请人:MCW Research Foundation, Incorporated
公开号:EP2247302A1
公开(公告)日:2010-11-10
Methods and Compositions For Correlating Ccl3l1/Ccr5 Genotypes With Disorders
申请人:Ahuja Sunil K.
公开号:US20080311572A1
公开(公告)日:2008-12-18
The present invention provides compositions and methods for identifying persons at an increased risk of infection by, transmission of, or accelerated progression of a disease caused by an HIV-1 virus. Diagnostic and therapeutic kits are also provided.