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Calciferol and its relatives. Part 22. A direct total synthesis of vitamin D2 and vitamin D3

โœ Scribed by Lythgoe, Basil; Moran, Thomas A.; Nambudiry, Mayara E. N.; Tideswell, John; Wright, Paul W.

Book ID
120343704
Publisher
Royal Society of Chemistry
Year
1978
Weight
724 KB
Volume
6
Category
Article
ISSN
1472-7781

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Direct total synthesis of vitamins D2 an
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โœ Basil Lythgoe; Mayara E.N. Nambudiry; John Tideswell ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 176 KB

In existing total syntheses 192 of vitamin D 3 the conjugated triene system is not constructed directly; instead, an isomeric triene, either 5-trans-vitamin D31b or precalcifero13,2 is first elaborated, and is then transformed into the vitamin itself by photochemical or thermal isomerisation. Vitam

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Among steroid hormones, la,25-dihydroxyvitamin D3 (l), a metabolite and the presumed active form of vitamin D3 (z), is structurally unique. 3 Unlike the classical steroid hormones such as estrogen, aldosterone, testosterone, etc., the seco-steroid 1 lacks the B-ring. Recent 1 H NMR studies from th