Synthesis of C-11-labelled metomidate analogues as adrenocortical imaging agents.

• Clinical findings using [C-11]methyl 1-[(1R)-1-phenylethyl]-1H-imidazole-5-carboxylate ([C-11]MTO, 1) show high uptake in lesions of adrenocortical origin, including adenomas, but low uptake in lesions of non-adrenocortical origin. In this paper the synthesis and preclinical evaluation of two new C-11-labelled analogues of MTO, [C-11]methyl 1-[(1R)-1-(4-chlorophenyl)ethyl]-1H-imidazole-5-carboxylate ([C-11]CLM, 2) and [C-11]methyl 1-[(1R)-1-(4-bromophenyl)ethyl]-1H-imidazole-5-carboxylate ([C-11]BRM, 3), using frozen-section autoradiography, organ distribution and a metabolic study are presented.

Subject headings

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

NATURVETENSKAP  -- Kemi -- Organisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Organic Chemistry (hsv//eng)

Keyword

PET

[C-11]methylation

MTO

metomidate

adrenocortical tumours

Chemistry

Kemi

Organic chemistry

Publication and Content Type

ref (subject category)

art (subject category)