close

Вход

Забыли?

вход по аккаунту

?

код для вставки
2005
Alkaloids
U 0600
14- 201
A Synthesis of (±)-Sparteine. — Racemic sparteine (VIII) is synthesized according to
the scheme. Key step of the synthesis is the ring opening of the diastereomeric mixture
of cyclopropanes (IV) to give an intermediate bisenolate. Quenching this bisenolate
with methanol affords (V) in good yields having the desired relative stereochemistry.
The presented approach seems to be applicable to a synthesis of either enantiomer of
(VIII). — (BUTTLER, T.; FLEMING*, I.; Chem. Commun. (Cambridge) 2004, 21,
2404-2405; Dep. Chem., Univ. Cambridge, Cambridge CB2 1EW, UK; Eng.) —
M. Paetzel
Документ
Категория
Без категории
Просмотров
0
Размер файла
23 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа