METHODS FOR SYNTHESIZING LABELED COMPOUNDS
The invention relates to methods for synthesizing compounds on solid supports. The invention also relates to synthesizing labeled compounds, such as those used in the field of radiopharmaceuticals. The invention relates to methods for synthesizing halogenated radiopharmaceuticals such as fludeoxyglucose (also known as fluorodeoxyglucose or FDG).
1 . A method for synthesizing labeled compounds, comprising:
labeling a protected precursor compound with a labeling agent to formed a labeled protected compound;
contacting the labeled precursor compound with a solid support;
removing the labeled protected compound from the solid support with a removing agents; and
deprotecting the labeled protected compound with a deprotecting agent to form a labeled deprotected compound.
2 . The method of claim 1 , wherein the labeled deprotected compound is a radiopharmaceutical.
3 . The method of claim 1 , wherein the labeled deprotected compound is a halogenated compound.
4 . The method of claim 1 , wherein the labeled deprotected compound is fluorodeoxyglucose.
5 . The method of claim 1 , wherein the removing agent comprises a solvent.
6 . The method of claim 5 , wherein the solvent comprises ethanol.
7 . The method of claim 1 , wherein the deprotecting agent comprises an acid or a base.
8 . The method of claim 1 , wherein the deprotecting agent comprises sodium hydroxide or hydrogen chloride.
9 . The method of claim 1 , wherein the protected precursor compound comprises a protecting group selected from the group consisting of acetyls, ethers, esters, thioesters, thioethers, imides, amides, carbamates, N-alkyles, N-aryles, N-heteroderivatives, cetals, acetals, ketals, acylals, benzoyls, benzyls, trityls, pivaloyls, sulfonamides, dithianes, and tetrahydropyranyls.
10 . The method of claim 1 , wherein the labeled protected compound comprises mannose triflate.
11 . A method comprising the steps of:
labeling a protected precursor compound with a labeling agent to form a labeled protected compound;
contacting the labeled protected compound with a medium containing two or more pieces of solid support or other media;
deprotecting the labeled protected compound in the medium with a deprotecting agent to form a labeled deprotected compound; and removing the labeled deprotected compound from the solid support or other media with a removing agent.
12 . The method of claim 11 , wherein the labeled deprotected compound is a radiopharmaceutical.
13 . The method of claim 1 , wherein the labeled deprotected compound is a halogenated compound.
14 . The method of claim 1 , wherein the labeled deprotected compound is fluorodeoxyglucose.
15 . The method of claim 1 , wherein the removing agent comprises a solvent.
16 . The method of claim 5 , wherein the solvent comprises ethanol.
17 . The method of claim 1 , wherein the deprotecting agent comprises an acid or a base.
18 . The method of claim 1 , wherein the deprotecting agent comprises sodium hydroxide or hydrogen chloride.
19 . The method of claim 1 , wherein the protected precursor compound comprises a protecting group selected from the group consisting of acetyls, ethers, esters, thioesters, thioethers, imides, amides, carbamates, N-alkyles, N-aryles, N-heteroderivatives, cetals, acetals, ketals, acylals, benzoyls, benzyls, trityls, pivaloyls, sulfonamides, dithianes, and tetrahydropyranyls.
20 . The method of claim 1 , wherein the labeled protected compound comprises mannose triflate.