Enantiodivergent synthesis of (+) and (−) altholactone from D-glucose. Preparation and cytotoxic activity of analogs
作者:J.-P. Gesson、J.-C. Jacquesy、M. Mondon
DOI:10.1016/s0040-4020(01)80093-4
日期:1989.1
Total synthesis of (+)altholactone (goniothalenol), an antitumor pyrone isolated from an unnamed polyalthea species and from goniothalamus giganteus, has been completed in 11 steps from D-glucose using the easily available aldehyde 7. Starting from the same compound or from the related benzoate 24 an enantiodivergent synthesis of (−)1 has also been completed using as the key step an efficient arylation
(+)内酯(goniothalenol)的全合成,是从D-葡萄糖用11个步骤,使用易于获得的醛7分离的,该抗肿瘤的吡喃酮是从一种未命名的聚阿拉斯木种和从淋菌中分离出来的。从相同的化合物或从相关的苯甲酸酯24开始,通过使用无水HF中的有效芳基化作为关键步骤,完成了(-)1的对映异构体合成。在这些条件下,在C-8处发生差向异构化,从而产生新的8-epi(+)1或其对映异构体。这些吡喃酮中的大多数在体外对L1210白血病表现出有趣的细胞毒性。