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. 2008 Jul 22;13(7):1472–1486. doi: 10.3390/molecules13071472

Scheme 3.

Synthesis of OA 28-glycosides (the second approach).

Scheme 3

Reagents and conditions: (a) K2CO3, CHCl3-H2O, Bu4NBr, 50°C; (b) NaOMe, CH2Cl2-MeOH, rt.