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Asymmetric total synthesis of (-)-Linderol A
被引:22
|作者:
Yamashita, Masayuki
[1
]
Yadav, Navnath Dnyanoba
[1
]
Sawaki, Takeshi
[1
]
Takao, Ikuko
[1
]
Kawasaki, Ikuo
[1
]
Sugimoto, Yasuko
[1
]
Miyatake, Akemi
[1
]
Murai, Kousuke
[1
]
Takahara, Ayano
[1
]
Kurume, Ai
[1
]
Ohta, Shunsaku
[1
]
机构:
[1] Kyoto Pharmaceut Univ, Dept Funct Mol Chem, COE Program 21, Kyoto 6078414, Japan
来源:
关键词:
POTENT INHIBITORY-ACTIVITY;
FRIEDEL-CRAFTS ACYLATION;
LINDERA-UMBELLATA BARK;
B-16;
MELANOMA-CELLS;
2-SUBSTITUTED CYCLOPENTA<B>BENZOFURAN-3-OL DERIVATIVES;
TRICYCLIC HEXAHYDRODIBENZOFURAN CONSTITUENT;
DIASTEREOSELECTIVE 2+2 PHOTOCYCLOADDITION;
3-SUBSTITUTED COUMARINS;
CHIRAL CYCLOHEXENONECARBOXYLATES;
STEREOCONVERGENT TRANSFORMATION;
D O I:
10.1021/jo070682+
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The first asymmetric total synthesis of (-)-Linderol A, a potent inhibitor of melanin biosynthesis of cultured B-16 melanoma cells, has been achieved via two key reactions: a diastereoselective [2+2] photocycloaddition of a coumarin-3-carboxylate bearing a chiral auxiliary with 3-methyl-1-butene and a subsequent stereoconvergent transformation of the photoadducts with use of dimethylsulfoxonium methylide to afford a tetrahydrodibenzofuran derivative.
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页码:5697 / 5703
页数:7
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