Synthesis of Cathasterone and its Related Putative Intermediates in Brassinolide Biosynthesis†

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Suguru Takatsuto, Hiroki Kuriyama, Takahiro Noguchi, Hiroyuki Suganuma, Shozo Fujioka and Akira Sakurai


Abstract

The putative intermediates in brassinolide biosynthesis, 22α-hydroxycampesterol 1, 6-deoxocathasterone and its 6α-hydroxylated compound 3, as well as cathasterone 4, are synthesized from a known (22E,24S)-6β-methoxy-3α,5-cyclo-5α-ergost-22-ene 5.


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