The simplest synthesis of 5,5-disubstituted and spiranic methyl 4-amino-2,2-dioxo-2,5-dihydro-1,2λ6-oxathiole-3-carboxylates
作者:Alexey V. Dobrydnev、Bohdan V. Vashchenko、Yulian M. Volovenko
DOI:10.1016/j.tetlet.2018.03.029
日期:2018.4
We report the short and the simplest strategy for the synthesis of methyl 4-amino-2,2-dioxo-2,5-dihydro-1,2λ6-oxathiole-3-carboxylates bearing aliphatic substituents at the 5th position. A number of cyanohydrins were forced to react with methyl 2-(chlorosulfonyl)acetate to give the interim methyl 2-[(cyanomethoxy)sulfonyl]acetates that upon Et3N-mediated conditions underwent the CSIC [Carbanion mediated
A new and convenient synthesis of 1-aminocyclopropanecar☐ylic acid from cyclopropanone acetal.
作者:Antoine Fadel
DOI:10.1016/s0040-4020(01)86558-3
日期:1991.8
Cyclopropanone acetal 2a undergoes the one-pot Strecker synthesis under sonication to provide the amino nitrile 8, which after hydrolysis and catalytic hydrogenolysis, gives 1-aminocyclopropanecar☐ylic acid (ACC, 1) in good overall yield.
Synthesis of cleonine, amino(1-hydroxycyclopropyl)acetic acid, a novel amino acid contained in cleomycin
作者:Kuniki Kato、Tomohisa Takita、Hamao Umezawa
DOI:10.1016/s0040-4039(00)71156-7
日期:1980.1
The synthesis of cleonine, amino(1-hydroxycyclopropyl)aceticacid, a novel aminoacid contained in cleomycin, a new bleomycin-phleomycin group antibiotic, is described.