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Synthese von optisch aktiven, natürlichen Carotinoiden und strukturell verwandten Naturprodukten. IX. Synthese von (3 R )‐Hydroxyechinenon, (3 R , 3′ R )‐ und (3 R , 3′ S )‐Adonixanthin, (3 R )‐Adonirubin, deren optischen Antipoden und verwandten Verbindungen
Author(s) -
Bernhard Kurt,
Englert Gerhard,
Mayer Hans,
Müller Robert K.,
Rüttimann August,
Vecchi Max,
Widmer Erich,
Zell Reinhard
Publication year - 1981
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19810640754
Subject(s) - chemistry , wittig reaction , optically active , stereochemistry , phosphonium , organic chemistry
Synthesis of Optically Active Natural Carotenoids and Structurally Related Compounds. IX. Synthesis of (3 R )‐Hydroxyechinenone, (3 R , 3′ R )‐ and (3 R , 3′ S )‐Adonixanthin, (3 R )‐Adonirubin, Their Optical Antipodes and Related Compounds The synthesis of racemic and optically active hydroxyechinenone ( 12–14 ), adonixanthin ( 16–19 ), adonirubin ( 22–24 ), meso ‐astaxanthin ( 26 ) and their corresponding diosphenols 15, 20, 21, 25, 27, 28 , and 29 ) by Wittig reaction is reported, starting from suitable C 15 ‐phosphonium salts and C 10 ‐aldehydes.