Highly Conjugated Ergostane-Type Steroids and Aranotin-Type Diketopiperazines from the Fungus Aspergillus terreus BCC 4651

[摘要]：Two new ergostane derivatives, 12 beta,15a,25,26-tetrahydroxyergosta-4,6,8(14),22-tetraen-3-one (1) and 12 beta,15a,25,28-tetrahydroxyergosta-4,6,8(14),22-tetraen-3-one (2), and a new aranotin-type diketopiperazine, bisdethiobis(methylsulfanyl)apoaranotin (3), were isolated from the fungus Aspergillus terreus BCC 4651. The structures of the new compounds were elucidated by means of NMR spectroscopic and MS analyses.

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