申请人:Coleman Robert S.
公开号:US20100234588A1
公开(公告)日:2010-09-16
Methods are provided for preparing compounds of the general formula (I)
wherein X
1
is an aryl hydrocarbon group optionally substituted with one or more groups independently selected from —R, —NH
2
, —NHR, —NR
2
, —OH, —OR, —F, —Cl, —Br, —I, —CF
3
, —C(═O)OH, —C(═O)OR, —C(═O)NH
2
, —C(═O)NHR, and —C(═O)NR
2
; X
2
is —H, —R, —NHR, —NR
2
, —OR, —F, —Cl, —Br, or —I; and R is C
1
to C
10
hydrocarbyl. The methods comprise a double-dehydrogenation reaction step in which a functionalized aminohydroazepinone skeleton comprising an aminoimidazole ring is reacted with 2-iodoxybenzene to form the imidazo[4,5-d]azepine ring system present in formula (I). Example methods comprising the double-dehydrogenation reaction step are provided as efficient synthetic routes to ceratamine A, ceratamine B, and the des-methyl analogs thereof.
提供了制备通式(I)中化合物的方法,其中X1是芳香烃烃基,可选择地取代一个或多个独立选择自—R、—NH2、—NHR、—NR2、—OH、—OR、—F、—Cl、—Br、—I、—CF3、—C(═O)OH、—C(═O)OR、—C(═O)NH2、—C(═O)NHR和—C(═O)NR2的基团;X2是—H、—R、—NHR、—NR2、—OR、—F、—Cl、—Br或—I;R是C1到C10烃基。该方法包括双去氢反应步骤,在该步骤中,将包含氨基咪唑环的官能化氨基羟杂环庚酮骨架与2-碘化苯反应,形成通式(I)中存在的咪唑并[4,5-d]环庚酮环系统。提供了包括双去氢反应步骤的示例方法,作为制备ceratamine A、ceratamine B及其去甲基类似物的高效合成路线。