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. Author manuscript; available in PMC: 2017 Sep 13.
Published in final edited form as: Nat Prod Rep. 2011 May 9;28(7):1229–1260. doi: 10.1039/c0np00013b

Scheme 16.

Scheme 16

Enantioselective syntheses of girolline (73, a.k.a. giradazole). a) Commerçon’s aldol approach.58 b) Ahond’s chiral pool strategy.59 Tr = triphenylmethyl; Boc = t-butoxycarbonyl, Im = imidazole, DMF = N,N-dimethylformamide, THF = tetrahydrofuran.