A Modular Approach to the Antifungal Sphingofungin Family: Concise Total Synthesis of Sphingofungin A and C.

Raguž L, Peng CC, Kaiser M, Görls H, Beemelmanns C (2021) A Modular Approach to the Antifungal Sphingofungin Family: Concise Total Synthesis of Sphingofungin A and C. Angew Chem Int Ed Engl , PubMed

ILRS Authors

Luka Raguz Chia-Chi Peng

Projects

Modular synthetic approaches towards natural sphingoid base-type signaling molecules
Details

Structure elucidation of natural products inducing morphogenesis in marine organisms and analysis of their biosynthesis
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Abstract

Sphingofungins are fungal natural products known to inhibit the biosynthesis of sphingolipids which play pivotal roles in various cell functions. Here, we report a short and flexible synthetic approach towards the sphingofungin family. Key step of the synthesis was a decarboxylative cross-coupling reaction of chiral sulfinyl imines with a functionalized tartaric acid derivative, which yielded the core motive of sphingofungins carrying four consecutive stereocenters and a terminal double bond. Subsequent metathesis reaction allowed for the introduction of different side chains of choice resulting in a total of eight sphingofungins, including for the first time sphingofungin C (eight steps from commercially available protected tartaric acid with an overall yield of 6%) and sphingofungin A (ten steps). All newly synthesized derivatives were tested for their antifungal, cell proliferative and antiparasitic activity unraveling their structure-activity relations.

Identifier

doi: 10.1002/anie.202112616 PMID: 34677894

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