A general strategy for the synthesis of cyclopeptidealkaloids containing an endocyclic aryl-alkyl ether bond has been developed featuring a key intramolecular S(N)Ar reaction. The importance of the N-terminal protective group in the realization of such a strategy is documented. From the appropriate amino acid constituents, the natural sanjoinine G1, a 14-membered para cyclophane, has been synthesized
The subject matter described herein is directed to Ferroportin inhibitor compounds of Formula I and pharmaceutical salts thereof, methods of preparing the compounds, pharmaceutical compositions comprising the compounds and methods of administering the compounds for prophylaxis and/or treatment of diseases caused by a lack of hepcidin or iron metabolism disorders, particularly iron overload states, such as thalassemia, sickle cell disease and hemochromatosis.
Approach towards the total synthesis of cyclopeptide alkaloids
作者:Taoues Laïb、Jieping Zhu
DOI:10.1016/s0040-4039(97)10513-5
日期:1998.1
Macrocylization via formation of aryl-alkyl ether bond was a key step in a model synthesis of 14-membered cyclopeptide alaloids. A new chemoenzymatic synthesis of chiral 2-amino-1-arylethanol was developed in the course of this study
Application of the N-Dibenzyl Protective Group in the Preparation of β-Lactam Pseudopeptides
作者:Rok Frlan、Martina Hrast、Stanislav Gobec
DOI:10.3390/molecules24071261
日期:——
Despite the great importance of β-lactam antibiotics, there is still a limited number of synthetic approaches for the formation of β-lactam–containing dipeptides. In this study, we report upon the stereoselective preparation of β-lactam–containing pseudopeptides, where different reaction conditions and NH2 protective groups were tested to obtain compounds that contain 3-amino-azetidin-2-one. We demonstrate
[EN] NEW PROCESS FOR THE PREPARATION OF PHOSPHINIC ACID<br/>[FR] NOUVEAU PROCEDE POUR LA PREPARATION D'ACIDE PHOSPHINIQUE
申请人:ASTRAZENECA AB
公开号:WO2006038872A1
公开(公告)日:2006-04-13
A new process for the synthesis of a compound of formula [Chemical formula should be inserted here. Please see paper copy] wherein A represents O or N; R1 represents a C?1#191-C?6#191 alkyl; R2 and R3 each independently represents C?1#191-C?10#191 alkyl, optionally substituted or interrupted by cyclic C?3#191-C?6#191 alkyl, cyclic C?3#191-C?6#191 heteroalkyl, aryl or heteroaryl; and X is selected from F, Cl, Br, or I, by a halogenation procedure comprising the consecutive sequence of following reactions: a) dienalkylation; b) formation of a leaving group on the alcohol function; and c) halogenation, is provided by the present invention as well as the compounds obtainable by the process.