A new and convergent synthesis for 2,5-diamino-tetrahydropyrimidones
摘要:
AN1057A/B has shown potent activity against MRSA. A novel and concise route to the synthesis of its heterocycle core 2,5-diamino-5,6-dihydro-1H-pyrimidine-4-one is described. This methodology allows the synthesis of an array of analogs with different amine substitutions at the 2-position. (C) 2003 Elsevier Science Ltd. All rights reserved.
of β-silyl α-amino acids is reported via the application of visible-light-mediated hydrosilylation. The reaction utilizes readily accessible and structurally diverse hydrosilanes to provide radicals for conjugate addition to dehydroalanine ester and analogues. Notably, the use of chiral methyleneoxazolidinone as the substrate and chiral inducer enabled the highly stereoselective synthesis. Furthermore
The disclosure features macrocyclic compounds, and pharmaceutical compositions and protein complexes thereof, capable of inhibiting Ras proteins, and their uses in the treatment of cancers.
该披露涉及大环化合物,以及能够抑制Ras蛋白并用于治疗癌症的制药组合物和蛋白复合物。
A new approach to the 2,5-diamino-5,6-dihydro-1H-pyrimidine-4-one derivatives: synthesis of TAN-1057A/B and analogs
作者:Lijun Zhang、Lianhong Xu、Choung U. Kim
DOI:10.1016/s0040-4039(03)01381-9
日期:2003.7
TAN-1057A/B has shown potent activity against MRSA. A new approach to the 2,5-diamino-5,6-dihydro-1H-pyrimidine-4-one derivatives has been developed. TAN-1057A/B and its analogs were efficiently synthesized using this new approach.
An expeditious preparation of the central pyrroloisoquinoline skeleton of manzamine A (I) was achieved via the high-pressure Diels-Alder reaction of 3-alkyl-5,6-dihydro-2-pyridinone (10) with Danishefsky diene followed by deprotection and spontaneous pyrrolidine ring clousure.