natural environment have stimulated the search for newsynthetic methodologies in organic and medicinal chemistry having no or minimum harmful effect. An interesting approach is the use of alternative activation factors, microwaves (MW) or ultrasounds (US) and also their cross-combination, which has been tested in the fast and efficient creation of new structures. At present, an easy and green hybrid
Synthesis of Haptens and Conjugates for ELISAs of Phytoestrogens. Development of the Immunological Tests
作者:Catherine Bennetau-Pelissero、Cyril Le Houérou、Valérie Lamothe、Françoise Le Menn、Pierre Babin、Bernard Bennetau
DOI:10.1021/jf990896v
日期:2000.2.1
Seven carboxylic acid haptens of isoflavonoids were synthesized, with the spacer arm on the oxygen atom at the C7 position for one series, with formononetin, daidzein, equol, biochanin A, and genistein, and at the C8 position for a second series, with only formononetin and daidzein. The different haptens were coupled to bovine serum albumin (BSA) and to swine thyroglobulin (Thyr). Polyclonal antibodies were generated against the BSA conjugates. Enzyme-linked immunosorbent assays (ELISAs) were developed based on competition between free phytoestrogens and the Thyr-hapten conjugates for specific antibodies. IC50 values of the standard curves ranged between 0.8 and 20 ng/mL that is, 0.3 and 9.2 pmol/well. The antibodies obtained should be useful for assays in vegetable matter as well as in biological fluids after a separation step. These ELISAs should be valuable also in the food industry to control phytoestrogen concentrations prior to and after processing.
ISOFLAVONES FOR TREATING MUCOPOLYSACCHARIDOSES
申请人:Grynkiewicz Grzegorz
公开号:US20090062380A1
公开(公告)日:2009-03-05
The invention relates to the medical use of natural isoflavones and their semisynthetic derivatives or the pharmaceutically acceptable salts thereof for the therapeutic and/or prophylactic treatment of diseases, at the base of which lies an excessive production or storage of glycosaminoglycans, especially for treatment of mucopolysaccharidoses. The isoflavones and their semisynthetic derivatives are represented by formula (I), in which R
1
and R
2
are the same or different and are independently H or alkyl, alkenyl, aryl alkylaryl, alkylcarbonyl, arylcarbonyl or mono-, di- or oligosaccharide group, each of then optionally substituted by at least one acyl, alkyl, cycloalkyl, alkoxyalkyl, aryl, alkylaryl, carboxyl or cyano; and R
3
is H, acyl or alkyl.