1152720-55-2Relevant academic research and scientific papers
SYNTHETIC METHOD FOR CERATAMINE A AND B AND ANALOGS THEREOF
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Page/Page column 9, (2010/09/18)
Methods are provided for preparing compounds of the general formula (I) wherein X1 is an aryl hydrocarbon group optionally substituted with one or more groups independently selected from —R, —NH2, —NHR, —NR2, —OH, —OR, —F, —Cl, —Br, —I, —CF3, —C(═O)OH, —C(═O)OR, —C(═O)NH2, —C(═O)NHR, and —C(═O)NR2; X2 is —H, —R, —NHR, —NR2, —OR, —F, —Cl, —Br, or —I; and R is C1 to C10 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.
A direct and efficient total synthesis of the tubulin-binding agents ceratamine A and B.; use of IBX for a remarkable heterocycle dehydrogenation
Coleman, Robert S.,Campbell, Erica L.,Carper, Daniel J.
supporting information; experimental part, p. 2133 - 2136 (2009/09/25)
The total synthesis of the tubulin-binding agents ceratamine A and B is reported, along with des-methyl analogs, via a synthetic route that is high-yielding and operationally efficient. The synthetic route involved a Beckmann rearrangement to form an azep
