A concise synthesis of desacetamido P-3A (2) is detailed which is based on an inverse electron demand [4 + 2] cycloaddition reaction of 2,4,6-tris(ethoxycarbonyl)-1,3,5-triazine with in situ generated 1,1-diaminoethene for the one-step preparation of an appropriately functionalized pyrimidine core.
A concise synthesis of desacetamido P-3A (2) is detailed which is based on an inverse electron demand [4 + 2] cycloaddition reaction of 2,4,6-tris(ethoxycarbonyl)-1,3,5-triazine with in situ generated 1,1-diaminoethene for the one-step preparation of an appropriately functionalized pyrimidine core.
Total syntheses of (+)-P-3A, epi-(-)-P-3A, and (-)-desacetamido P-3A
作者:Dale L. Boger、Takeshi Honda、Royce F. Menezes、Steven L. Colletti、Qun Dang、Wenjin Yang
DOI:10.1021/ja00080a010
日期:1994.1
Full details of the first total syntheses of (+)-P-3A (1), epi-(-)-P-3A (2), and (-)-desacetamido P-3A (3) are disclosed. Key strategic elements of the approach include the implementation of an inverse electron demand [4 +2] cycloaddition reaction of 2,4,6-tris(ethoxycarbonyl)-1,3,5-triazine with in situ generated 1,1-diaminoethene for one-step preparation of an appropriately functionalized pyrimdine