Total synthesis of (+)-fendleridine (aspidoalbidine) and (+)-1-acetylaspidoalbidine.
Total synthesis of (+)-fendleridine (aspidoalbidine) and (+)-1-acetylaspidoalbidine.
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DOI:
10.1021/ja908819q
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发表时间:
2010-03-10
影响因子:
15
通讯作者:
Boger, Dale L.
中科院分区:
文献类型:
--
作者:
Campbell, Erica L.;Zuhl, Andrea M.;Liu, Christopher M.;Boger, Dale L.
A total synthesis of the Aspidosperma alkaloids (+)-fendleridine (1) and (+)-1-acetylaspidoalbidine (2) is detailed, providing access to both enantiomers of the natural products and establishing their absolute configuration. Central to the synthetic approach is a powerful intramolecular [4 + 2]/[3 + 2] cycloaddition cascade of a 1,3,4-oxadiazole in which the pentacyclic skeleton and all the stereochemistry of the natural products are assembled in a reaction that forms three rings, four C–C bonds, five stereogenic centers including three contiguous quaternary centers, and introduces the correct oxidation state at C19 in a single synthetic operation. The final tetrahydrofuran bridge is subsequently installed in one-step, enlisting an intramolecular alcohol addition to an iminium ion generated by nitrogen assisted opening of the cycloadduct oxido bridge, with a modification that permits release of useful functionality (a ketone) at the cleavage termini.
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影响因子:
2.7
作者:
MEDINA, JD;DIGENOVA, L
通讯作者:
DIGENOVA, L
影响因子:
2.7
作者:
Mitaine, AC;Mesbah, K;LeMenOlivier, L
通讯作者:
LeMenOlivier, L
影响因子:
5.2
作者:
Liu, YQ;Luo, SJ;Zhai, HB
通讯作者:
Zhai, HB
影响因子:
15
作者:
Ishikawa H;Colby DA;Seto S;Va P;Tam A;Kakei H;Rayl TJ;Hwang I;Boger DL
通讯作者:
Boger DL
影响因子:
1.1
作者:
BURNELL, RH;MEDINA, JD;AYER, WA
通讯作者:
AYER, WA