993-04-4Relevant articles and documents
Synthesis of deramciclane labelled with radiocarbon in various positions
Szammer,Simon-Trompler,Mate,Abermann,Uermoes,Klebovich
, p. 1011 - 1018 (2007/10/03)
[U-14C]Bromobenzene, prepared from [14C]barium carbonate according to literature procedures, was transformed (Li/diethylether) into [14C]phenyllithium which was condensed with camphor giving rise to [U-14C-phenyl]borneol: 2. The latter, after conversion into its sodium sail, was reacted with dimethylaminoethyl chloride to give [14C-Ar]Deramciclane, which was isolated as the fumarate salt. This 8 step synthesis from [14C]BaCO3 gave an overall yield of 12%. [1-14C]Sodium acetate, through a standard 5 step literature procedure, was converted to N,N-dimethylaminoethyl-1-14C chloride 5 which was condensed with the sodium derivative of 2-phenylborneol giving rise to [1-14C-side chain]Deramciclane, again isolated as the fumarate. This 6 step synthesis from [14C]BaCO3 gave an overall yield of 8%. The specific radioactivities from the two syntheses were respectively 40 mCi/mmol and 21 mCi/mmol; chemical and radiochemical purities were better than 98%.