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Preparation of chiral building blocks for synthesis of Aconitium alkaloids

✍ Scribed by Masataka Ihara; Makoto Suzuki; Akihito Hirabayashi; Yuji Tokunaga; Keiichiro Fukumoto

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 290 KB
Volume: 6
Category: Article
ISSN: 0957-4166
DOI: 10.1016/0957-4166(95)00267-s

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✦ Synopsis

Treatment of meso-diols 3 and 6 with CCL and vinyl acetate without solvent produced the AE part of Aconitium alkaloids 2 and 7 in 68% and 75% yields, respectively, with > 96% e.e. Quantitative formations of their MTPA esters 4 and 8 were achieved by reaction with MTPA in the presence of DCC and DMAP in CICH2CH2CI.

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