摘要:
Conformationally constrained diacylglycerol analogues, pharmaceutical compositions comprising such analogues, and methods of using such analogues as agonists and antagonists of protein kinase C.
摘要:
Seven-membered heterocyclic nucleosides used to inhibit the deamination enzyme responsible for the inactivation of arabinosylcytosine (ara--C). Preferred nucleosides containing a seven-member aglycone are as follows: ##STR1## Preferred aglycones are as follows: ##STR2## Active components utilized against pyrimidine deaminases from mammalian tissues (mouse kidney and human liver) showed optimum advantage when compared with tetrahydrouridine (THU).
摘要翻译:用于抑制负责灭活阿拉伯糖基胞嘧啶(ara-C)的脱氨酶的七元杂环核苷。 含有七元糖苷配基的优选核苷如下:R = H,苯甲酰基,对 - 硝基苯甲酰基X = H,OR A = R,单 - ,二 - 和三 - 磷酸酯(PO3E2,P2O6E3,P3O9E4)E = H,Na优选的糖苷配基如下:图像1a:X = OCH 2 CH 2 O 1b:X = SCH 2 CH 2 S 1c:X = O 1d:X = H,OH 1e:X = 2H用于来自哺乳动物组织的嘧啶脱氨酶的活性成分 小鼠肾和人肝)与四氢尿苷(THU)相比显示出最佳的优势。
摘要:
Conformationally locked 4',6'-cyclopropane-fused carbocyclic nucleoside analogues. The compounds are prepared by condensing a cyclopropane-fused carbocyclic allylic alcohol with substituted purine or pyrimidine bases. The condensation products are then modified to produce the adenosine, guanosine, cytidine, thymidine and uracil nucleoside analogues. The compounds are therapeutically useful as antimetabolites, or in the preparation of anti-metabolic agents.
摘要:
Cyclopentenyl pyrimidine compounds have potent anti-viral, anti-tumor and differentiating activity. Of these compounds, cyclopentenyl cytosine has proved to be particularly effective in a variety of tumors, as well as having good antiviral activity and potent differentiating properties.
摘要:
The invention provides for novel 2-Deoxyadenosine compounds, which can treat HIV infection at low cytotoxicity values. Substitution at the 4′-position provided compounds which demonstrated low cytotoxicity values in an ATP-based cytotoxicity assay.
摘要:
A method of preparing a 2'-fluoro compound of the formula ##STR1## where B is selected from the group consisting of purines and pyrimidines, both of which may be substituted, comprises reacting a compound of the formula II(a) or II(b) ##STR2## where R and R' are as defined in the specification with an acid halide under conditions effective to obtain a halide of the formula ##STR3## where X is a halogen. A silane of the formula B-Si (R").sub.3 where R" is as defined in the specification, is added to this product (III) under conditions effective to obtain a compound of the formula (IV) ##STR4## The compound of formula (IV) is reacted with a reagent selected from the group consisting of ammonia, BCl.sub.3 and ((C.sub.1 -C.sub.10)alkyl).sub.4 NF, under conditions effective to obtain the compound of formula (I). The compounds of formula (I) resulting from these methods exhibit anti-HIV activities and are useful for therapy against the HIV virus.
摘要:
Purine nucleosides active against human immunodeficiency virus which are substituted at the 2'-position by a strong electronegative group such as fluorine are stable in an acid environment and thus can be used for oral administration.
摘要:
The new compound 3-deazaneplanocin A has been discovered to have potent anti-viral, anti-tumor activity and differentiating activity. A simple method for preparing 3-deazaneplanocin A has been developed involving nucleophilic substitution, which method can also be used to prepare a great variety of carbocyclic nucleosides.
摘要:
Compounds for use as orally active anaphylactic inhibitors are disclosed. The compounds are trans-2,3b,4,5,7,8b,9,10-octahydronaphto [1,2-c:5,6-c'] dipyrazoles which may be substituted in both of the pyrazole rings. Also disclosed are intermediate compounds which are the corresponding trans-2,6-bis (hydroxymethylene) decalin-1,5-diones.
摘要:
Hydantoin derivatives of varying lipophilic character were prepared as nigen mustard carriers for CNS anti-tumor evaluation in transplanted mouse tumor test systems. Activity was studied in the murine ependymoblastoma brain tumor system. Multiple cures were observed for three of the four analogs examined. The compounds were also active in the intraperitoneal leukemia L1210 and P388 systems as well as in B16 melanoma and Lewis lung carcinoma.