Journal of Organic Chemistry p. 3431 - 3434 (1990)
Update date:2022-08-02
Topics:
Takeda, Kei
Igarashi, Yasuo
Okazaki, Kousuke
Yoshii, Eiichi
Yamaguchi, Kentaro
Cycloaddition of α-(acyloxy-γ-methylene-β-tetronate 16, obtained by condensation of three segments ((+/-)-11, 12, and 15), affords four diastereomeric macrolides 17a-d (1:2.8:1.9:0.9 ratio).The exo mode adduct 17a has been converted to (+/-)-24-O-methylchlorothricolide (19).
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