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Spieleentwicklung mit Direct3D

✍ Scribed by Zerbst, Stefan

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German
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Fiction

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📜 SIMILAR VOLUMES

Direct total synthesis of vitamins D2 an
Direct total synthesis of vitamins D2 and D3
✍ Basil Lythgoe; Mayara E.N. Nambudiry; John Tideswell 📂 Article 📅 1977 🏛 Elsevier Science 🌐 French ⚖ 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