**Synthesis of (±)‐α‐Chamigrene** __Cis__‐ and __trans__‐β‐ionol (__cis__ and __trans__‐**1**) underwent acid catalysed dehydration to a mixture of the tetraenes **2–5** in 70–80% yield (Table 1). Irradiation of this mixtures made the 6‐(__Z__), 8‐(__Z__)‐isomer **5** accessible (columns 3 and 4 in
Thyrocalcitonin III. Die Synthese des α-Thyrocalcitonins: Vorläufige Mitteilung
✍ Scribed by W. Rittel; M. Brugger; B. Kamber; B. Riniker; P. Sieber
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- German
- Weight
- 308 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Abgekllrzte Schreibweise entsprechend den Empfehlungen der * IUPAC-IUB Commission on Biochemical Nomenclature v [3]. HELVETICA CWIMICA ACTA -Volumen 51, Fasciculus 4 (1968) ' ) Die Prtifung verdankcn wir Herrn 1)c. R . i \ f A I E R und Hcrrn W . ~I G N A T (CIRA AKT~ENCESELL-SCHAFT, Basel).
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**Synthesis of muscaflavin** A biomimetic type synthesis of the yellow dihydroazepine amino acid **5** isolated from fly agaric is achieved starting with carboxypyridyl alanine derivatives.
## Abstract 1α‐hydroxycholesterol (**4a**) was synthesized from cholesterol and transformed __via__ its diacetyl derivative **4b** into 1α, 3β‐diacetoxycholesta‐5, 7‐diene (**6b**). Irradiation of the ring‐B‐diene **6b** followed by thermal isomerization and saponification gave 1α‐hydroxycholecalci