Tetrahydrofuran thf

2,4-dihydroxyacetophenone, 1-bromooctane, potassium carbonate (K₂CO₃), potassium iodide (KI), magnesium sulfate (MgSO₄), potassium hydroxide (KOH), 3-bromobenzaldehyde, glutathione (GSH), and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) were all obtained from Sigma-Aldrich. Tetrahydrofuran (THF) was received from Tokyo Chemical Industry Co. Ltd. Dichloromethane (CH₂Cl₂), chloroform (CHCl₃), and hexane were all purchased from Anaqua Global International Inc. Limited. SYTO 9 and propidium iodide (PI) were received from Thermal Fisher. Ethanol (EtOH) and methanol were obtained from Merk. Bovine serum albumin (BSA) was purchased from Aladdin. All commercial reagents were used as received unless otherwise stated. Ultrapure water (18.25 MΩ·cm, 25 °C) was used in the experiments.

Titanium tetrachloride (TiCl₄) (99%; Tokyo Chemical Industry Co.) were dried over phosphorus pentoxide (P₂O₅) under N₂ atmosphere for 12 hours before use, n-hexane (99.5%; Beijing Yanshan Petroleum Chemical Co.) were refluxed and distilled with sodium under N₂ atmosphere for 48 hours before use, 1,4-butadiene (BD) (99%; Beijing Yanshan Petroleum Chemical Co.) and isobutylene (IB) (99.9%; Beijing Yanshan Petroleum Chemical Co.) were condensed in a cold bath in a glove box prior to polymerization. 5-tert-Butyl-bis(2-methoxy-2-propyl)benzene (t-Bu-m-DiCuOMe) was prepared by 5-tert-butylisophthalic acid through grignard reaction. Methyl chloride (MeCl) (99%; Beijing Chemical Reagent Co.), commercial polyurethane (PU) (Pellethane5863, Lubrizol, Mn = 10 000 g mol⁻¹), 4,4′-methylenebis(phenyl isocyanate) (MDI) (97%; Tokyo Chemical Industry Co.), tetrabutylammonium hydroxide (TBAH) (27wt% solution in H₂O; Tokyo Chemical Industry Co.), stannous octoate ((Sn(Oct)₂) (95%; Tokyo Chemical Industry Co.), 1,4-butanediol (BDO) (99%; Tokyo Chemical Industry Co.), tetrahydrofuran (THF) (99.9%; Tokyo Chemical Industry Co.), 2,6-di-tert-butylpyridine (DtBP) (96%; Tokyo Chemical Industry Co.), methanol (99%; Beijing Chemical Reagent Co.), nitric acid (68%; Beijing Chemical Reagent Co.) were used as received.

Rutin and naringinase were purchased from Sigma-Aldrich Co. LLC., St. Louis, MO, USA. DMF, tert-butyldiphenylsilyl chloride (TBDPSCl), EDC·HCl, 4-DMAP, TBAF, and tetrahydrofuran (THF) were purchased from Tokyo Chemical Industry Co., Ltd., Tokyo, Japan. Flavonols (17, 18, and 20–21), organic acids (22–31), and other chemicals, unless otherwise indicated, were purchased from Nakalai Tesque Inc., Kyoto, Japan.