Synthesis of 1,6-anhydro-3-bromo-3,4-dideoxy-?-d-threo-hex-3-enopyranose
摘要:
A preparative method for chemo- and stereoselective reduction of 3-bromolevoglucosenone into 1,6-anhydro-3-bromo-3,4-dideoxy-beta-D-threo-hex-3-enopyranose using Zn(BH4)(2) was developed.
Cytotoxic effect of levoglucosenone and related derivatives against human hepatocarcinoma cell lines
作者:Germán F. Giri、Mauro Danielli、Raúl A. Marinelli、Rolando A. Spanevello
DOI:10.1016/j.bmcl.2016.07.007
日期:2016.8
Levoglucosenone has been used as template for the synthesis of a wide variety of compounds with an impressive structural variability. However, scarce work has been done regarding the generation of new bioactive entities. Here we report the cytotoxic effect of levoglucosenone and some related derivatives against hepatocarcinoma celllines. Compounds were obtained in only one synthetic step and one of
Cycloaddition “4 + 2” reactions of levoglucosenone
作者:David D. Ward、Fred Shafizadeh
DOI:10.1016/s0008-6215(00)85573-1
日期:1981.9
Abstract The reactions of levoglucosenone with a variety of dienes ranging from 1,3-butadiene to 1,3-diphenylisobenzofuran have been investigated and found to provide a variety of multicyclic products in good yield. With the exception of furan, the adducts were formed by the “4 + 2” cycloaddition reaction. The structures of these products are discussed on the basis of their p.m.r and c.m.r. data. 3-Bromolevoglucosan
Aziridination and aza-Wharton Reactions of Levoglucosenone
作者:Edward T. Ledingham、Ben W. Greatrex
DOI:10.1071/ch18574
日期:——
pyrolysis product (−)-levoglucosenone, via the reaction of primary aliphatic amines with 3-iodolevoglucosenone. In contrast to the reactions of aliphatic amines, the use of 4-methoxyaniline resulted in an aza-Michael-initiated dimerisation reaction, and 1,3-diphenylurea gave a 2-imidazolidinone. The aziridine products were transformed using the aza-Wharton reaction, affording novel sulfonamide and amine-substituted
Reactions of 3-iodolevoglucosenone with sodium derivatives of some CH acids. Chiral cyclopropanes and stable oxetenes
作者:F. A. Valeev、E. V. Gorobets、M. S. Miftakhov
DOI:10.1007/bf02494418
日期:1999.1
Abstract3-Iodolevoglucosenone reacts with the sodium derivative of ethyl cyanoacetate at −60°C to give a tetrasubstituted cyclopropane derivative; similar reactions of the sodium derivatives of ethyl acetoacetate and acetylacetone at −60 °C afford the expected transformed Michael adducts, while at 20 °C,O,C-dialkylated products of the oxetene series are formed.
摘要3-碘代左旋葡萄糖酮在-60℃与氰基乙酸乙酯的钠衍生物反应生成四取代的环丙烷衍生物;乙酰乙酸乙酯和乙酰丙酮的钠衍生物在 -60 °C 下的类似反应提供了预期的转化迈克尔加合物,而在 20 °C 下,形成了氧杂环丁烷系列的二烷基化产物。
Understanding reactivity and regioselectivity in Diels–Alder reactions of a sugar-derived dienophile bearing two competing EWGs. An experimental and computational study
作者:Germán F. Giri、Ariel M. Sarotti、Rolando A. Spanevello
DOI:10.1016/j.carres.2015.07.017
日期:2015.10
The effect of an extra EWG in the reactivity and regioselectivity in Diels-Alderreactions of beta-cyanolevoglucosenone and 4 different dienes was studied by a joint computational and experimental study. Conceptual DFT analysis successfully predicted an important enhancement in the reactivity, and correctly anticipated the regioselectivity in the reactions with isoprene. However, this static treatment