Synthesis of ω-fluorinated octanoic acid and its β-substituted derivatives
作者:Fumi Nagatsugi、Shigeki Sasaki、Minoru Maeda
DOI:10.1016/s0022-1139(00)81186-0
日期:1992.3
analogs of octanoic acid and its β-substituted derivatives in which insertion of a methyl and dimethyl group, and oxygen substitution at the C-3 position are involved, employing nucleophilic displacement with fluoride ion of the tosylate functions in the later stage of synthesis. The synthetic procedures offer easy and convenient access to the corresponding 18F-labeled analogs using the readily available
[EN] TARGETING CHIMERIC COMPOUND, PHARMACEUTICAL COMPOSITION COMPRISING SAME, PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] COMPOSÉ CHIMÈRE DE CIBLAGE, COMPOSITION PHARMACEUTIQUE LE COMPRENANT, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 靶向嵌合化合物、含其的药物组合物及其制备方法和用途
As a model study on the synthesis of natural products possessing an eight-membered cyclic ether or amine framework such as laurencin (1) and FR900482 (6), two kinds of 2-benzyl oxacyclooctanones (7 and 8) and 2-methyl azacyclooctanones (9 and 10) were synthesized from the corresponding twelve-membered lactam sulfoxides (49-52) by applying our general method for medium-ring ketone synthesis. The corresponding lactam sulfides were readily prepared from the linear ω-tosyl carboxylic acids containing on oxygen atom (11 and 12) or methylcarbamate group (13 and 14) by condensation with 2-cyanoethyl 2-N-methylaminophenyl sulfide followed by alkylation.