On the assignment of the absolute configuration at the isolated methyl branch in miyakosyne A, cytotoxic linear acetylene, from the deep-sea marine sponge Petrosia sp.
摘要:
Absolute configuration of miyakosyne A at its isolated branched methyl stereogenic center has been studied by chemical degradation in combination with esterification with the Ohrui's acid. Comparison of the H-1 NMR data of the relevant diesters for the degradation product and the synthetic standards indicated the 14R-configuration. (C) 2013 Elsevier Ltd. All rights reserved.