118829-40-6Relevant articles and documents
Synthesis of labile all-trans-7,8,7′,8′-bis-acetylenic carotenoids by bi-directional Horner-Wadsworth-Emmons condensation
Vaz, Belén,Fontán, Noelia,Casti?eira, Marta,álvarez, Rosana,De Lera, ángel R.
supporting information, p. 3024 - 3031 (2015/03/18)
A new stereoselective synthesis of the C40-bis-acetylenic carotenoids all-trans-(3R,3′R)-alloxanthin and all-trans-3,4,7,8,3′,4′,7′,8′-octadehydro-β,β-carotene, both compounds featuring a stereochemically labile C7-C10 enyne, based on a bi-directional Horner-Wadsworth-Emmons (HWE) reaction of a C15-phosphonate and a central C10-dialdehyde, is reported. The triene unit of the latter fragment was synthesized using the acyclic metathesis/dimerization reaction.
Stereoselective total synthesis of the acetylenic carotenoids alloxanthin and triophaxanthin
Yamano, Yumiko,Chary, Mahankhali Venu,Wada, Akimori
, p. 4103 - 4108 (2012/06/15)
Stereoselective total synthesis of the C40-diacetylenic carotenoid alloxanthin (1) and the C31-acetylenic apocarotenoid triophaxanthin (2) was accomplished by Wittig condensation of C 10-dialdehyde 20 or C16-ket
Stereocontrolled synthesis of optically active β-D-glucopyranosides of 3-hydroxy-7,8-didehydro-β-ionol
Yamano, Yumiko,Watanabe, Yasuko,Watanabe, Naoharu,Ito, Masayoshi
, p. 2017 - 2018 (2007/10/03)
A stereocontrolled synthesis of optically active β-D-glucopyranosides 1-4 of 3-hydroxy-7,8-didehydro-β-ionol utilizing an asymmetric transfer hydrogenation to α,β-acetylenic ketones catalyzed by chiral ruthenium complexes as the key step is described.