Three new lignans, sambucunol A (8) ((+)-erythro-1-(4-hydroxy-3-methoxyphenyl)-2-[4-(4-hydroxy-3-methoxycinnamoyloxypropanyl)-2-hydroxyphenoxy]-1, 3-propanediol), sambucunol B (9) ((+)-threo-1-(4-hydroxyl-3-methoxyphenyl)-2-[4-(4-hydroxy-3-methoxy-cinnamoyloxy propanyl)-2-hydroxyphenoxy]-1, 3-propanediol) and buddlenol G (10) (2-{4-[2, 3-dihydro-3-hydroxymethyl-7-hydroxy-5-(4-hydroxy-3-methoxyc...

We have developed a new technology called multi-catalysis for the sequential one-pot synthesis of highly functionalized heterocycles. A practical and novel multi-component aniline-, self- and Brønsted acid-catalyzed selective process for the sequential one-pot synthesis of highly substituted 2-(2-hydroxy-aryl)-cyclopentane-1,3-diones, 3,9-dihydro-2H-cyclopenta[b]chromen-1-ones and 3,3-dimethyl-...

In the past [1-3], most frequently used model substrates for the peroxyester reaction included, among others, hydrocarbons containing activated hydrogen atoms, such as, cyclohexene, and ethers, such as, tetrahydrofuran. Peroxyamidate 1 (R = N(CH3)2) of acceptable purity was prepared in molar quantities by an improvement of the procedure reported by Pedersen [4] utilizing the reaction of N,N-dim...

Chem. Abstr. Serv. Reg. No.: 126-07-8 Deleted CAS Nos: 8027-03-0; 8055-10-5; 3426-54-8; 11103-62-1; 24659-79-8 Chem. Abstr. Name: (1′S,6′R)-7-Chloro-2′,4,6-trimethoxy-6′-methylspiro[benzofuran-2(3H),1′-[2]cyclohexene]-3,4′-dione IUPAC Systematic Name: 7-Chloro-2′,4,6-trimethoxy-6′β-methylspiro[benzofuran-2(3H),1′-[2]cyclohexene]-3,4′-dione Synonyms: (2S,4′R)-7-Chloro-2′,4,6-trimethoxy-4′-methyl...

A new series of aromatic and heterocyclic sulfonamides, including six new derivatives, 2-(3-cyclohexene-1-carbamido)-1,3,4-thiadiazole-5-sulfonamide (CCTS), 4-(3-cyclohexene-1-carbamido) methyl-benzenesulfonamide (CCBS), 2-(9-octadecenoylamido)-1,3,4-thiadiazole-5-sulfonamide (ODTS), 2-(4,7,10-trioxa-tetradecanoylamido)-1,3,4-thiadiazole-5-sulfonamide (TDTS), 2-(coumarine-3-carbamido)-1,3,4-thi...

Many chemically synthesized xenobiotics can significantly inhibit the vitality of parasitic nematodes. However, there is yet too little research on toxicity such contaminating compounds toward Compounds that are present in plants able to organisms as well. According results our laboratory studies toxicity, following caused no decrease larvae Strongyloides papillosus and Haemonchus contortus: me...