SYNTHESIS IN THE FIELD OF THE ERYTHRINA ALKALOIDS: PART II. APPROACHES TO THE RING SYSTEM OF β-ERYTHROIDINE
作者:B. Belleau
DOI:10.1139/v57-095
日期:1957.7.1
The newly developed method for the elaboration of the ringsystem of the aromatic class of Erylhrina alkaloids has been successfully extended to the synthesis of 1,2,3,4-tetrahydroerythrinane (VI), a non-aromatic analogue. The key step in this synthesis involves ring closure of ketoamide (IV) itself, obtained from hexahydroindole and cyclohexenylacetic acid. Attempts to further extend this sequence
新开发的用于合成 Eryhrina 生物碱芳香类环系的方法已成功扩展到 1,2,3,4-四氢赤藓烷 (VI),一种非芳香类似物的合成。该合成中的关键步骤涉及从六氢吲哚和环己烯基乙酸中获得的酮酰胺 (IV) 本身的闭环。尝试将该顺序进一步扩展到使用 2H-5,6-二氢吡喃乙酸作为起始材料在后者的制备阶段遇到了失败。对图 III 所示的一种新的且不相关的逐步方法进行了研究,但在最终步骤中失败了。还简要描述了其他不成功的方法。
Indolobenzoquinoline derivatives, their preparation and their use as anti-arrhythmic drugs
申请人:Sankyo Company Limited
公开号:EP0415776A2
公开(公告)日:1991-03-06
Optically active compounds of formula (I):
in which R1 is hydrogen or alkyl; Xb and Yb are hydrogen or hydroxy; and Z is -NRaRb in which Ra and Rb are hydrogen, alkyl or hydroxyalkyl, or a cyclic amino group;
and pharmaceutically acceptable salts thereof have enhanced anti-arrhythmic activity and may be prepared by a stereospecific synthesis process.
Vinylogous Wolff rearrangement. 4. General reaction of .beta.,.gamma.-unsaturated .alpha.'-diazo ketones
作者:Amos B. Smith、Bruce H. Toder、Stephen J. Branca
DOI:10.1021/ja00326a018
日期:1984.7
Preparation et transposition de Wolff vinylogue de 21 α'-diazocetones β,γ insaturees acycliques et monocycliques. Formation d'esters γ,δ-insatures. La transposition est catalysee par CuSO 4 , Cu(AcAc) 2 ou Cu(OTf) 2 en presence de divers alcools; mecanisme
制备和转位 de Wolffvinylogue de 21 α'-diazocetones β,γ insaturees acycliques et monocycliques。形成 d'esters γ,δ-insatures。La transposition est catalysee par CuSO 4 , Cu(AcAc) 2 ou Cu(OTf) 2 en存在de divers alcools;机制
Synthetic route to tricyclic carbon compounds by Friedel–crafts acylation
作者:Arlette Tubul、Maurice Santelli
DOI:10.1039/c39880000191
日期:——
Acylation of cyclohexene by cyclohexenyl- or cyclopentenyl-acetyl chloride gave des-A-11-oxo or des-D-7-oxo steroids.
通过环己烯基-或环戊烯基-乙酰氯酰化环己烯,得到des- A -11-氧代或des-D-7-氧代甾族化合物。
Preparation of optically active cyclohexenol and cyclohexenyl acetic acid via an enzymatic process followed by a rearrangement reaction and their use as intermediates in the synthesis of indolobenzoquinoline derivatives
申请人:Sankyo Company Limited
公开号:EP0674008A1
公开(公告)日:1995-09-27
A process for the production of optically active compounds of formula (VIII) and III
which process comprises the following steps:
(a) reaction, in the presence of a lipase, of a dl-trans-cyclohexanol compound of formula (XXI):
to give an optically active compound of formula (XXIV)
followed by b) an oxidation, c) an elimination and d) a hydrolyzation reaction to give the optically active compound VIII and rearranging the compound VIII with orthoester to the optically active compound III.
Compounds VIII and III are intermediates in the synthesis of optically active compounds of formula I
一种生产式(VIII)和式(III)光学活性化合物的工艺
该工艺包括以下步骤
(a) 式(XXI)的二反式环己醇化合物在脂肪酶存在下进行反应:
得到式(XXIV)的光学活性化合物
然后进行 b) 氧化反应、c) 消去反应和 d) 水解反应,得到光学活性化合物 VIII,并将化合物 VIII 与原酯重新排列,得到光学活性化合物 III。
化合物 VIII 和 III 是合成具有光学活性的式 I 化合物的中间体。