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A class of senkyunolide analogues bearing benzofuranone fragment were designed, synthesized and evaluated for their neuroprotective effect in models of oxygen glucose deprivation (OGD) and oxidative stress. All tested compounds showed neuroprotection profile based on the cell viability assay. In particular, derivatives 1f-1i possessing furoxan-based nitric oxide releasing functionality exhibited significant biological activities in OGD models. More importantly, compound 1g containing short linker with furoxan displayed the most potent neuroprotection at the concentration of 100 μM (cell survival up to 145.2%). Besides, 1g also showed the middle level neuroprotective effect in model of oxidative stress., (Copyright © 2018 Elsevier Ltd. All rights reserved.)

A class of novel pyrimidine derivatives bearing diverse conformationally restricted azabicyclic ether/amine were designed, synthesized and evaluated for their GPR119 agonist activities against type 2 diabetes. Most compounds exhibited superior hEC 50 values to endogenous lipid oleoylethanolamide (OEA). Analogs with 2-fluoro substitution in the aryl ring showed more potent GPR119 activation than those without fluorine. Especially compound 27m synthesized from endo-azabicyclic alcohol was observed to have the best EC 50 value (1.2nM) and quite good agonistic activity (112.2% max) as a full agonist., (Copyright © 2017 Elsevier Ltd. All rights reserved.)

A series of nitric oxide (NO) donating derivatives of hederacolchiside A 1 bearing triterpenoid saponin motif were designed, synthesized and evaluated for their anticancer activity. All of the tested furoxan-based NO releasing compounds showed significant proliferation inhibitory activities. Especially compound 6a exhibited strong cytotoxicity (IC 50 =1.6-6.5μM) against four human tumor cell lines (SMMC-7721, NCI-H460, U251, HCT-116) in vitro and the highest level of NO releasing. Furthermore, compound 6a was revealed low acute toxicity to mice and weak haemolytic activity with potent tumor growth inhibition against mice H22 hepatocellular cells in vivo (51.5%)., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Modification of Hederacolchiside A1 (HA1) on 28-COOH gave a series of novel triterpenoid saponin compounds containing ester or amide group. Comparing with natural product HA1, several derivatives showed decreased toxicity in the mice acute toxicity trial and increased the anticancer activity in vitro. Especially compound 1 exhibited the strongest antiproliferative activities against human cancer cell lines tested (IC50=1.1-4.6μM) and potent tumor inhibition rate in vivo (46.8%)., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

5-Nitropyrimidine analogs substituted with conformationally restricted azabicyclic amines and alcohols were prepared and evaluated their agonistic activity against human GPR119. The analogs bearing endo-azabicyclic amines and alcohols (7, 8, 11, and 12) exhibited full agonistic activities while the analogs with exo-azabicyclic amines and alcohols were proved as partial agonists (9, 10, 13, and 14) regardless of their EC(50) values. 5-Nitropyrimidine analogs with (2-fluoro-4-methylsulfonyl)phenylamino group (8, 10, 12, 14) showed more potent GPR119 activation activities than the analogs without fluorine in all cases (7, 9, 11, 13)., (Copyright © 2012 Elsevier Ltd. All rights reserved.)