Journal of the Chemical Society. Perkin transactions I p. 139 - 146 (1984)
Update date:2022-08-02
Topics:
Takatsuto, Suguru
Yazawa, Naoto
Ishiguro, Masaji
Morisaki, Masuo
Ikekawa, Nobuo
Plant growth-promoting steroids, brassinolide (1a), (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-B-homo-7-oxa-5α-ergostan-6-one, castasterone (2a), (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-5α-ergostan-6-one, 28-norbrassinolide (1b), (22R,23R)-2α,3α,22,23-tetrahydroxy-B-homo-7-oxa-5α-cholestan-6-one, brassinone (2b), (22R,23R)-2α,3α,22,23-tetrahydroxy-5α-cholestan-6-one, and typhasterol (2c), (22R,23R,24S)-3α,22,23-trihydroxy-5α-ergostan-6-one, have been stereoselectively synthesized.These steroids show very strong biological activities in three different kinds of bioassays.
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