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  • Title: Milbemycins alpha 11, alpha 12, alpha 13, alpha 14 and alpha 15: a new family of milbemycins from Streptomyces hygroscopicus subsp. aureolacrimosus. Taxonomy, fermentation, isolation, structure elucidation and biological properties.
    Author: Takahashi S, Miyaoka H, Tanaka K, Enokita R, Okazaki T.
    Journal: J Antibiot (Tokyo); 1993 Sep; 46(9):1364-71. PubMed ID: 8226315.
    Abstract:
    Streptomyces hygroscopicus subsp. aureolacrimosus SANK 60286 produces a new family of milbemycins, named milbemycins alpha 11, alpha 12 [corrected], alpha 13, alpha 14 and alpha 15, together with other milbemycins. Their structures are 3-methyl-2-butenoyloxy and 3-methylbutyroyloxy derivatives at C-4a of milbemycins A3 and A4, or 3-methyl-2-pentenoyloxy derivative at C-4a of milbemycin A3, respectively. Milbemycin alpha 14, 3-methyl-2-butenoyloxy derivative, especially possesses a potent acaricidal activity.
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