Stereocontrol in organic synthesis using silicon-containing compounds. Studies directed towards the synthesis of ebelactone AElectronic supplementary information (ESI) available: Experimental section. See http://www.rsc.org/suppdata/ob/b3/b316899a/
作者:Sarah C. Archibald、David J. Barden、J�r�me F. Y. Bazin、Ian Fleming、Colin F. Foster、Ajay K. Mandal、Amit K. Mandal、David Parker、Ken Takaki、Anne C. Ware、Anne R. B. Williams、Anna B. Zwicky
DOI:10.1039/b316899a
日期:——
Several approaches to the synthesis of ebelactone A 2 are described, culminating in the synthesis of the benzenesulfonate of 2-epi-ebelactone A 161. All the approaches were based on three fragments A, B and C, originally defined in general terms in, but eventually used as the aldehyde 72, the allenylsilane 3 and the aldehyde 139, respectively. They were joined, first B with C, and then B+C with A.
Useful Syntheses of (3<i>S</i>)-2,3,4,5-Tetrahydropyridazine-3-carboxylic Acid and Its Dehydrotetrapeptide Derivatives
作者:Yutaka Nakamura、Chung-gi Shin
DOI:10.1246/cl.1991.1953
日期:1991.11
The stereoselective synthesis of (3S)-2,3,4,5-tetrahydropyridazine-3-carboxylic acid (Pya), which is a cyclic α-amino acid at center of antrimycins (1), was successful. Moreover, the synthesis of the C-terminal dehydrotetrapeptide of 1 containing Pya residue at N-terminus is described.
(3S)-2,3,4,5-四氢哒嗪-3-羧酸 (Pya) 的立体选择性合成是成功的,它是一种位于抗霉素 (1) 中心的环状 α-氨基酸。此外,还描述了在 N 端含有 Pya 残基的 1 的 C 端脱氢四肽的合成。
Alkoxymagnesium halides
作者:N.Ya. Turova、E.P. Turevskaya
DOI:10.1016/s0022-328x(00)81827-6
日期:1972.8
to alkoxymagnesium halides HalMgOR have been studied indicating that the halides may be formed by the thermolysis of cements [solidified equimolar mixtures of Mg(OR)2 with MgHaI2] or from the alcoholysis of solutions of Grignard reagents in ether. The products have been characterised by the use of X-ray and IR techniques. Mg(OR)2 reacts with MgHal2 in alcohol to form metastable alkoxymagnesium halides