A Convenient Divergent Approach to the Alkaloids Isaindigotone and Luotonin A
Pedro MolinaDepartamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain; Fax + 34 (9 68)36 41 49; E-mail: [email protected]Alberto TárragaFax + 34 (9 68)36 41 49Antonia Gonzalez‐TejeroDepartamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain
2000en
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Deoxyvasicinone has been used as the key intermediate to prepare the alkaloids isaindigotone and luotonin A. This intermediate is directly converted into isaindigotone by condensation with 4-acetoxy-3,5-dimethoxybenzaldehyde; alternatively oxidation with SeO2 afforded the pyrrolo[2,1-b]quinazoline-3,9-dione, a putative precursor of the luotonin A.
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