important quaternary α-benzyl- and α-allyl-α-methylamino cyclobutanones in good to high yield, via a sequential one-pot methylation/sigmatropic rearrangement, has been accomplished for the first time. The quaternary α-alkyl-α-amino cyclobutanones could be further manipulated, affording synthetically interesting scaffolds such as highlysubstituted tryptamines and cyclobuta-fused indolines.
Catalytic Enantioselective Synthesis of α-(Benzylamino)cyclobutanones
作者:Nicola Melis、Lorenza Ghisu、Régis Guillot、Pierluigi Caboni、Francesco Secci、David J. Aitken、Angelo Frongia
DOI:10.1002/ejoc.201500460
日期:2015.7
An organocatalytic enantioselectivesynthesis of α-(benzylamino)cyclobutanones has been achieved by employing a tandem condensation/intramolecular rearrangement/proton transfer reaction and starting from racemic α-hydroxycyclobutanone and a selection of benzylamines. This reaction sequence afforded the products in good to high yields with moderate to high enantioselectivities.
Stereospecific synthesis of (1S,2S)-1-hydroxy-2-[(S)-valylamino]-cyclobutane-1-acetic acid, a novel microbial antimetabolite
作者:Robert M. Adlington、Jack E. Baldwin、Richard H. Jones、John A. Murphy、Melchiorre F. Parisi
DOI:10.1039/c39830001479
日期:——
The unusual cyclobutane-containing dipeptide (1S,2S)-1-hydroxy-2-[(S)-valylamino]-cyclobutane-1-aceticacid (1), produced by an as yet unidentified Streptomyces species X-1092 was synthesised via a short stereospecific route.
This invention relates to aryloxycycloalkanolaminoalkylene aryl ketones to the processes for their preparation and to their use as antihypertensive agents.
本发明涉及芳基氧代环烷基氨基烷基芳基酮的制备过程及其作为降压剂的用途。
The synthesis and antimicrobial activity of (1,2)-1-hydroxy-2-[(s)-valylamino]cyclobutane-1-acetic acid (1) and (1, 2)-1-hydroxy-2-aminocyclobutane-1-acetic acid (2)
作者:Jack E. Baldwin、Robert M. Adlington、Melchiorre F. Parisi、Hong-Hoi Ting
DOI:10.1016/0040-4020(86)80025-4
日期:1986.1
The unusual cyclobutanol containingdipeptide (1,2)-1-Hydroxy-2-[(S)-valylamino]cyclobutane-1-acetic acid (1), produced by an as yet unidentified Streptomyces species X-1092, has been synthesised a short stereoselective route. Acid hydrolysis of (1) gave (1,2)-1-hydroxy-2-aminocyclobutane-1-acetic acid (2) which in direct comparison tests to (1) gave enhanced antibacterial activity against the gram-positive