A Short and Enantioselective Synthesis of Colletodiol

Laurent Ferrié; Patrice Capdevielle; Janine Cossy

doi:10.1055/s-2005-871562

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Synlett 2005(12): 1933-1935
DOI: 10.1055/s-2005-871562

LETTER

A Short and Enantioselective Synthesis of Colletodiol

Laurent Ferrié, Patrice Capdevielle, Janine Cossy*
Laboratoire de Chimie Organique associé au CNRS, ESPCI, 10 Rue Vauquelin, 75231 Paris Cedex 05, France
Fax: +33(1)40794660; e-Mail: janine.cossy@espci.fr;

Further Information

Publication History

Received 3 May 2005
Publication Date:
22 June 2005 (online)

Abstract
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Abstract

A 12-step enantioselective synthesis of colletodiol has been achieved using a cross-coupling metathesis and a Sharpless dihydroxylation as the key steps.

Key words

cross-metathesis - colletodiol - Sharpless dihydroxylation

References

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11

This compound gives satisfactory spectroscopic and analytical data.

13

Dihydroxylation of 12 gives a mixture of 13 and 13′ in a 10:1 ratio (Scheme [3] ).

14

Colletodiol(1): mp 163-165 °C; R _f = 0.35 [toluene-dioxane-AcOH, 20:10:1 (v/v/v)]; [α]_D +35.6 (c 0.5, CHCl₃). ¹H NMR (300 MHz, CDCl₃): δ = 6.73 (m, 2 H), 6.13 (d, J = 15.6 Hz, 1 H), 5.73 (d, J = 15.4 Hz, 1 H), 5.31 (m, 1 H), 5.18 (m, 1 H), 4.07 (dd, J = 8.5, 5.5 Hz, 1 H), 3.67 (dd, J = 8.0, 6.0 Hz, 1 H), 2.87 (br s, OH, 1 H), 2.72 (br s, OH, 1 H), 2.52 (m, 1 H), 2.22 (dt, J = 12.4, 11.4 Hz, 1 H), 2.01 (dd, J = 15.0, 3.5 Hz, 1 H), 1.50 (ddd, J = 15.8, 6.0, 2.0 Hz, 1 H), 1.36 (d, J = 6.5 Hz, 3 H), 1.34 (d, J = 6.8 Hz, 3 H). ¹³C NMR (75 MHz, CDCl₃): δ = 166.6, 165.1, 146.3, 144.1, 125.7, 123.9, 74.0, 71.9, 68.7, 67.9, 41.1, 36.3, 20.4, 18.1. IR: 3600-3100 (br), 2980, 2934, 1748, 1716, 1653, 1444, 1347, 1314, 1261, 1172, 1105, 1034, 985, 916, 859, 824, 791, 742, 706, 631, 600 cm^-1.