A New Approach to Methoxyisatins Leading to the Total Synthesis of Ophiuroidine and Other Hydroxytryptanthrins
作者:Jan Bergman、Jeffrey Mason、Tomasz Janosik
DOI:10.1055/s-0029-1217004
日期:2009.11
A new method for the preparation of methoxyisatins from the corresponding methoxyanilines is described. The resulting methoxyisatins were used in the syntheses of several methoxytryptanthrin compounds. The natural product ophiuroidine (4,8,9-trihydroxytryptanthrin) was obtained from the appropriate trimethoxy precursor using a microwave-mediated Prey demethylation.