Two new triterpenoid polyethers with a tetramethylsqualene carbon skeleton, botryolins A and B, have been isolated from the green microalga Botryococcus braunii. Their structures were determined by means of spectral analyses including 2D NMR.
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http://dx.doi.org/10.1016/s0031-9422(02)00005-5 | DOI Listing |
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