Pyrazolopyrimidine-2,4-dione Sulfonamides: Novel and Selective Calcitonin Inducers
摘要:
A. series of py-razolo[4,3-d]pyrimidine sulfonamides and pyrazolo[3,4-d]pyrimidine sulfonamides have been synthesized. These compounds increase transcription of a calcitonin-luciferase promoter and production of cellular calcitonin in a calcitonin-secretion/RIA assay with minimized phosphodiesterase type 4 inhibitory activity at 30 muM as compared to structurally related xanthine methylene ketones such as denbufyllene. These two series are notable examples of small molecules that act as CT-inducers, a method to potentially treat bone loss diseases.
Proaromatic pyranylidene chalcogen analogues and cyclopenta[ c ]thiophen-4,6-dione as electron donors and acceptor in efficient charge-transfer chromophores
Fifteen new push-pull chromophores based on a proaromatic pyranylidene donor and its chalcogen analogues and various electron acceptor moieties were synthesized in a straightforward manner. These model molecules were designed and prepared to investigate the concept of proaromaticity as a tool to tune the fundamental properties of push-pull systems. All target chromophores with systematically varied
Fourteen new D–π-A push–pullchromophoresbased on two isomeric thienothiophene donors and seven acceptors of various electronic natures have been designed and conveniently synthesized. In contrast to known thienothiophene push–pull molecules, the prepared small chromophores proved to be organic materials with easily tunable thermal, electrochemical and (non)linear optical properties. It has also been
Non-Fullerene Small Molecule Acceptors Containing Barbituric Acid End Groups for Use in High-performance OPVs
作者:Jong-chan Choe、Tae Ho Lee、Eunhee Lim
DOI:10.1002/bkcs.11631
日期:2019.1
octyl‐substituted barbituric acid (BAR) groups, respectively, via a well‐known synthetic method, the Knoevenagel condensation, in high yield. These small molecules displayed solubilities and thermal stabilities sufficient for the fabricating organic photovoltaic cells (OPVs) and were designed to have relatively low molecular orbital energy levels and act as non‐fullerene acceptors (NFAs) for use in OPVs
This invention relates to uracil-derived compounds of forumlas(I) and (II) which are agonists of the parathyroid hormone type I receptor (PTH1R) and as such are useful for the treament of osteoporosis.