The structure for the synthesized stagonolide G has
been revised according to the structure given in Org.
Lett. 2010, 12, 5752.
The final product in Scheme 4 is thus revised as per the new data
available from the reference cited above.
Scheme 4 Reagents
and conditions: (a) 2,4,6-trichlorobenzoyl chloride, Et3N,
anhyd THF, r.t., 2 h, DMAP, toluene, r.t.; (b) HF-pyridine, anhyd
THF, 0 ˚C→r.t.; (c) Grubbs II catalyst, anhyd
CH2Cl2, reflux; (d) Na, liq NH3,
anhyd THF, -78 ˚C
Reference
Angulo-Pachün, C. A.; Díaz-Oltra, S.; Murga,
J.; Carda, M.; Alberto Marco, J. Org. Lett. 2010, 12, 5752.
