Seephonkai Prapairat, Kongsaeree Palangpon, Prabpai Samran, Isaka Masahiko, Thebtaranonth Yodhathai
Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand.
Org Lett. 2006 Jul 6;8(14):3073-5. doi: 10.1021/ol061046l.
[reaction: see text] An unusually bridged epidithiodiketopiperazine, pretrichodermamide A (3), was isolated from the fungus Trichoderma sp. BCC 5926. During the extensive effort to crystallize 3 for X-ray crystallographic analysis, conversion of this compound to trichodermamide A with coproduction of S(8) occurred.