摘要:
An efficient, regiocontrolled approach to the synthesis of 8-fluoropurines by direct fluorination of purines with dilute elemental fluorine, or acetyl hypofluorite, is provided. In a preferred embodiment, a purine compound is dissolved in a polar solvent and reacted with a dilute mixture of F2 in He or other inert gas.
摘要:
A protected 6-trimethylstannyl dopa derivative has been synthesized for the as a precursor for the preparation of 6-[.sup.18 F]fluoro-L-dopa. The tin derivative readily reacts with electrophilic radiofluorinating agents such as [.sup.18 F]F.sub.2, [.sup.18 F]OF.sub.2 and [.sup.18 F]AcOF. The [.sup.18 F]fluoro intermediate was easily hydrolyzed with HBr and the product 6-[.sup.18 F]fluoro-L-dopa was isolated after HPLC purification in a maximum radiochemical yield of 23%, ready for human use.
摘要:
An efficient, regiocontrolled approach to the synthesis of 8-fluoropurines by direct fluorination of purines with dilute elemental fluorine, or acetyl hypofluorite, is provided. In a preferred embodiment, a purine compound is dissolved in a polar solvent and reacted with a dilute mixture of F.sub.2 in He or other inert gas.
摘要:
Provided herein are [18F]-labeled compounds having a chemical structure: R1 is 18F, 1-piperazinyl-4-CH2CH2—18F or 1-piperazinyl-4-CH2CH2OCH2CH2—18F, R2 is CH3 or 18F and R3 is Cl or 18F, such that only one of R1, R2 and R3 comprise an 18F. Also provided are methods for in vivo imaging using the [18F]-labeled compounds, particularly methods of imaging utilizing positron emission tomography. These methods are effective for diagnosing a pathophysiological condition susceptible to treatment with kinase inhibitor(s) in a subject, or for determining whether a cancer in a subject that is susceptible to being treated with a kinase inhibitor has developed resistance or increased sensitivity to the same and for maximizing tumor response to akinase inhibitor with minimal toxicity to the subject.
摘要:
Embodiments of the present disclosure provide for compounds and methods of making compounds such as those shown in FIGS. 1.1A and 1.1B having formula 2, 3, 4, 5, 11, and 12 and formula 2′, 4′, and 11′, as well as uses for the compounds for imaging, and the like.
摘要:
Embodiments of the present disclosure provide for compounds and methods of making compounds such as those shown in FIGS. 1.1A and 1.1B having formula 2, 3, 4, 5, 11, and 12 and formula 2′, 4′, and 11′, as well as uses for the compounds for imaging, and the like.
摘要:
A process for forming a 6-fluoro derivative of compounds in the L-Dopa family comprising the steps of protecting the groups attached to the benzene ring in the compound followed by serially reacting the protected compound with (a) iodine and silver trifluoroacetic acid; (b) Bb.sub.3 ; (c) dit-butyldicarbonate; (d) hexamethyltin; (e) a fluoro compound; (f) hydrobromic acid; and (g) raising the pH to .ltoreq.7.