TY - JOUR
T1 - Asymmetric syntheses of diarylheptanoid natural products (-)-centrolobine and (-)-de-O-methylcentrolobine via hetero-Diels-Alder reaction catalyzed by dirhodium(II) tetrakis[(R)-3-(benzene-fused-phthalimido)-2-piperidinonate]
AU - Washio, Takuya
AU - Yamaguchi, Reika
AU - Abe, Takumi
AU - Nambu, Hisanori
AU - Anada, Masahiro
AU - Hashimoto, Shunichi
N1 - Funding Information:
This research was supported, in part, by a Grant-in-Aid for Scientific Research on Priority Areas ‘Advanced Molecular Transformations of Carbon Resources’ from the Ministry of Education, Culture, Sports, Science and Technology, Japan. T.W. is grateful to JSPS for a graduate fellowship. We thank Ms. S. Oka, M. Kiuchi, A. Maeda, and H. Matsumoto of the Center for Instrumental Analysis at Hokkaido University for mass measurements and elemental analysis.
PY - 2007/11/26
Y1 - 2007/11/26
N2 - Catalytic asymmetric syntheses of (-)-centrolobine and (-)-de-O-methylcentrolobine have been achieved, incorporating a hetero-Diels-Alder (HDA) reaction between 4-aryl-2-silyloxy-1,3-butadienes and phenylpropargyl aldehyde derivatives as a key step. The HDA reaction using dirhodium(II) tetrakis[(R)-3-(benzene-fused-phthalimido)-2-piperidinonate], Rh2(R-BPTPI)4, as a chiral Lewis acid catalyst provides exclusively cis-2,6-disubstituted tetrahydropyran-4-ones in up to 93% ee.
AB - Catalytic asymmetric syntheses of (-)-centrolobine and (-)-de-O-methylcentrolobine have been achieved, incorporating a hetero-Diels-Alder (HDA) reaction between 4-aryl-2-silyloxy-1,3-butadienes and phenylpropargyl aldehyde derivatives as a key step. The HDA reaction using dirhodium(II) tetrakis[(R)-3-(benzene-fused-phthalimido)-2-piperidinonate], Rh2(R-BPTPI)4, as a chiral Lewis acid catalyst provides exclusively cis-2,6-disubstituted tetrahydropyran-4-ones in up to 93% ee.
KW - (-)-Centrolobine
KW - (-)-De-O-methylcentrolobine
KW - Chiral Rh(II) catalyst
KW - Diarylheptanoids
KW - Hetero-Diels-Alder reaction
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U2 - 10.1016/j.tet.2007.09.003
DO - 10.1016/j.tet.2007.09.003
M3 - Article
AN - SCOPUS:35348856244
SN - 0040-4020
VL - 63
SP - 12037
EP - 12046
JO - Tetrahedron
JF - Tetrahedron
IS - 48
ER -