Total Syntheses of the Isomeric Aglain Natural Products Foveoglin A and Perviridisin B: Selective Excited-State Intramolecular Proton-Transfer Photocycloaddition.

Total Syntheses of the Isomeric Aglain Natural Products Foveoglin A and Perviridisin B: Selective Excited-State Intramolecular Proton-Transfer Photocycloaddition.
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DOI:
10.1002/anie.201707539
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发表时间:
2017-11-13
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Porco JA Jr
Porco JA Jr
中科院分区:
其他
文献类型:
--
作者:
Wang W;Clay A;Krishnan R;Lajkiewicz NJ;Brown LE;Sivaguru J;Porco JA Jr

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介绍了3-羟基黄酮与反式,反式-1,4-二苯基-1,3-丁二烯的选择性ESIPT光环加成反应。利用该方法,完成了天然产物(±)-foveoglin A和(±)-perviridisin B的全合成。使用TADDOLs作为手性氢键添加剂的ESIPT光环加成提供了获得(+)-foveoglin a的途径。机制研究揭示了光诱导电子转移(PET)途径的可能性。3-羟基黄酮与反式,反式-1,4-二苯基-1,3-丁二烯的选择性ESIPT光环加成已实现,使全合成的同分异构体再次天然产物foveoglin A和pervividisin b。
Selective ESIPT photocycloaddition of 3-hydroxyflavones with trans, trans-1,4-diphenyl-1,3-butadiene is described. Using this methodology, total syntheses of the natural products (±)-foveoglin A and (±)-perviridisin B have been accomplished. Enantioselective ESIPT photocycloaddition using TADDOLs as chiral hydrogen-bonding additives provided access to (+)-foveoglin A. Mechanistic studies have revealed the possibility for a photoinduced electron transfer (PET) pathway. Selective ESIPT photocycloaddition of 3-hydroxyflavones with trans,trans-1,4-diphenyl-1,3-butadiene has been achieved which enabled the total syntheses of isomeric aglain natural products foveoglin A and perviridisin B. Mechanistic studies have revealed the possibility of a photoinduced electron transfer (PET) pathway.
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