RETRACTED: Sannastatin, a novel toxic macrolactam polyketide glycoside produced by actinomycete Streptomyces sannanensis.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. One of the co-authors, Hartmut Laatsch, informed the journal that this paper was submitted and published without his consent. This is a violation of the journal's policy that all authors of a paper should approve submission of a manuscript. Apologies are offered to readers of the journal that this was not detected during the submission and evaluation process.