摘要:
Processes are described for preparing 42-pegylated rapamycins including reacting a rapamycin with an acylating agent in the presence of a lipase to form an acylated rapamycin and reacting the acylated rapamycin with a methoxy poly(ethylene glycol) derivative in the presence of a base. Also described are processes for preparing 32-pegylated tacrolimus and/or ascomycin using these steps.
摘要:
A method of generating synthetic metabolites of CCI-779 is provided. Five novel CCI-779 derivatives are described, as are methods of using these derivatives for detecting CCI-779 metabolites in samples.
摘要:
A process for preparing the compound of formula II by reacting the compound of formula I with an enzyme that can hydrolyze the ester bond: where * indicates a chiral center, R1 and R2 each independently represent H, C1-C6alkyl, —CN or —CCH, and R3 and R4 each independently represent H or C1-C6alkyl.
摘要:
Methods for the synthesis of regiospecific rapamycin 42-hemiesters and regiospecific FK506 32-esters with dicarboxylic acids is described. The methods involve catalyzing the reaction between a rapamycin or a FK-506 and a dicarboxylic anhydride or a bifunctional activated ester of dicarboxylic acid with a lipase.
摘要:
Methods for the synthesis of CCI-779 and proline-CCI-779 are described, including a method involving lipase-catalyzed acetylation of 42-hydroxy of rapamycin with a vinyl ester of 2,2-bis(hydroxymethyl) propionic acid in an organic solvent followed by deprotection. Also provided are products containing proline-CCI-779 and uses thereof.
摘要:
41-methoxy-labeled rapamycin 42-ester with 3-hydroxy-2-(hydroxymethyl)-2-methylpropionic acid (CCI-779) compounds are provided, along with methods for the synthesis and use thereof.
摘要:
A method of generating synthetic metabolites of CCI-779 is provided. Five novel CCI-779 derivatives are described, as are methods of using these derivatives for detecting CCI-779 metabolites in samples.
摘要:
A method for rapamycin-specific labeling using rapI, rapM and/or rapQ enzymes is described. Also are methods for generating crude enzyme extracts useful in the method of the invention. Uses of the specifically labeled rapamycin as diagnostic tools are provided.
摘要:
A method for the regiospecific synthesis of rapamycin 42-ester derivatives is described. The method involves lipase-catalyzed acetylation of 42-hydroxy of rapamycin with an acyl donor such as a vinyl ester, an isopropenyl ester or an anhydride in a suitable organic solvent.
摘要:
A method of generating synthetic metabolites of CCI-779 is provided. Five novel CCI-779 derivatives are described, as are methods of using these derivatives for detecting CCI-779 metabolites in samples.