Synlett 2002(8): 1265-1268
DOI: 10.1055/s-2002-32977
LETTER
© Georg Thieme Verlag Stuttgart · New York

A Short and General Approach to the Synthesis of Styryllactones:(+)-Goniodiol, its Acetates and β-Trifluoromethyl Derivative, (+)-7-epi-Goniodiol and (+)-9-Deoxygoniopypyrone

Jian Chen, Guo-Qiang Lin*, Zhi-Min Wang, Han-Quan Liu
Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai, 200032, P. R. China
Fax: +86(21)64166263; e-Mail: lingq@pub.sioc.ac.cn;
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Publikationsverlauf

Received 26 May 2002
Publikationsdatum:
25. Juli 2002 (online)

Abstract

(+)-Goniodiol, its acetates and β-trifluoromethyl derivative, (+)-7-epi-Goniodiol and (+)-9-deoxygoniopypyrone, the representatives of styryllactones have been synthesized in a short and general way. The key steps involve the regioselective asymmetric dihydroxylation and the palladium-catalyzed cross-coupling of cyclic allylic carbonate with vinyltributylstannane.

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The enantiomeric excess was determined by HPLC analysis on chiralcel OB-H, column (detected at 254 nm; eluent: hexane/i-PrOH).

3b (1-Phenyl-but-3-ene-1,2-diol) for (1 S , 2 S ): [α]D 20 -9.7 to 10.3 (c 0.7, CHCl3). (1 R , 2 R ): [α]D 20 +10.6 to 11.1 (c 0.3, CHCl3). IR (neat): 3390, 3087, 3032, 1645, 1604, 1495, 1454, 1198, 1126, 1054, 997, 928, 843, 763 cm-1. 1H NMR (300 MHz, CDCl3): δ = 7.35 (s, 5 H), 5.7 (m, 1 H), 5.25 (dd, J = 3.0 Hz, J = 15.8 Hz, 1 H), 5.15 (dd. J = 3 Hz, J = 10 Hz, 1 H), 4.5 (d, J = 7 Hz, 1 H), 4.2 (m, ???H), 3.0 (s, 1 H), 2.7 (s, 1 H). MS (EI): m/z = 164 (M, 7.88), 146 (M - 18, 1.50), 114 (71.83), 107(100), 79 (68.72). HRMS for C10H12O2: 164.0838. E. A for C10H12O2: C, 72.99%; H, 7.27%.
3c (4-Phenyl-but-3-ene-1,2-diol) for (2 R ): [α]D 24 -38.4 (c 1.8, CHCl3). (2 S ): [α]D 24 +36.4 (c 1.45, CHCl3). IR (neat): 3341, 3066, 3036, 1638, 1495, 1128, 1087, 942, 813, 751 cm-1. 1H NMR (300 MHz, CDCl3): δ = 7.37 (s, 5 H), 5,74 (d, 1 H, J = 12.6 Hz), 5.87 (dd, 1 H, J = 12.6 Hz, J = 7.4 Hz), 4.26 (m, 1 H), 3.75 (d, 2 H, J = 6.5 Hz), 3.1 (br, s, 1 H), 2.6 (br, s, 1 H). MS (EI) m/z = 164 (M, 7.88), 146 (M - 18, 1.50), 114 (71.83), 91(100), 79 (68.72). HRMS: Calcd for C10H12O2: 164.0838. E. A. for C10H12O2: C, 72.92%; H, 7.18%.

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The ratio of E/Z was checked by GC-MS.

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16, β-Trifluoromethylgoniodiol: [α]D 20 +68.2 (c 1.0, CHCl3). MS (EI): m/z: 326 (M+ + 23). 1H NMR (300 MHz, CDCl3): δ = 7.3-7.5 (m, 5 H), 6.4 (s, 1 H), 5.3 (d, J = 7.2 Hz, 1 H), 4.8 (dd, J = 7.2, 5.8 Hz, 1 H), 4.2 (m, 1 H).