1: (5-(ethylamino)-5-oxopentyl)triphenylphosphonium bromide With potassium tert-butylate in tetrahydrofuran T=0°C; 1 h; 2: (3aR,4R,5R,6aS)-4-((S,E)-3-hydroxy-5-phenylpent- 1-enyl)hexahydro-2H-cyclopenta[b]furan-2,5-diol in tetrahydrofuran T=-17°C; Wittig Reaction; 20.5 h;

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '741857', constants.ctx, '0')">acetonitrile</a> <br />T=80&deg;C;&nbsp;14&nbsp;h;&nbsp;<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: thionyl chloride; DMFA / toluene / 4 h / 50 &deg;C<br />2: N,N- diisopropylethylamine / tetrahydrofuran / 1 h / 0 &deg;C<br />3: acetonitrile / 14 h / 80 &deg;C<br /> <br /> &nbsp;