## Abstract The dienal **14** and the ketone **19**, both potential building blocks of maytansinoids, were synthesized starting from ethyl vanillate (**2**) __via__ the aldehyde **9**. It could be shown in a preliminary experiment that the dienal **14** can be coupled with 2‐lithio‐1,3‐dithiane to
✦ LIBER ✦
BUILDING BLOCKS FOR THE SYNTHESIS OF MAYTANSINOIDS
✍ Scribed by Götschi, Erwin; Schneider, Fernand; Wagner, Hans; Bernauer, Karl
- Book ID
- 120646578
- Publisher
- Taylor and Francis Group
- Year
- 1981
- Tongue
- English
- Weight
- 543 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0030-4948
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The structure of 7 is characterized by two parallel Cp\* rings; the distance between the two Co atoms (2.253(1) A) is 0.08 A shorter than in [Cp:Co, (p-CO),].t'51 This finding