Day: November 21, 2022

Islam, Tofazzal Md. published the artcileMicroscopic studies on attachment and differentiation of zoospores of the phytopathogenic fungus Aphanomyces cochlioides, Safety of 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, the publication is Journal of General Plant Pathology (2002), 68(2), 111-117, database is CAplus.

The mode of aggregation, attachment and differentiation of zoospores of the phytopathogenic fungus Aphanomyces cochlioides when interacting with the host and a host-specific attractant and a G-protein activator, mastoparan, was studied by light and SEM. When a zoospore approached very close to the host root, it seemed to halt, then coiled its anterior flagellum on its body. The halted zoospore appeared to contact the host surface with its posterior flagellum, which gradually drew the encysting zoospore onto the root surface. The spore then docked precisely on the root surface at its ventral face with the help of the posterior flagellum and anchored itself by releasing some adhesive materials. The adherent spore became a spherical after shedding its flagella and rapidly turned into an expanded cyst forming a smooth cyst coat around it, and finally changed into a smaller cystospore covered with a wrinkled surface. In contrast, the mastoparan- or cochliophilin A-stimulated zoospores on artificial membranes aggregated by using their posterior flagella before encystment. These contrasting phenomena suggest that A. cochlioides zoospores may use their posterior flagella for successful docking on the host surface or for aggregation of encysting spores in the absence of the host.

Journal of General Plant Pathology published new progress about 110204-45-0. 110204-45-0 belongs to dioxole, auxiliary class Flavonoids, name is 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, and the molecular formula is C16H10O5, Safety of 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Wen, Yaolin published the artcilePhenolic constituents of Celosia cristata L. susceptible to spinach root rot pathogen Aphanomyces cochlioides, Related Products of dioxole, the publication is Bioscience, Biotechnology, and Biochemistry (2006), 70(10), 2567-2570, database is CAplus and MEDLINE.

Cochliophilin A (5-hydroxy-6,7-methylenedioxyflavone, 1), known as a host-specific attractant towards the zoospores of A. cochlioides, a cause of root rot and damping-off diseases of Chenopodiaceae, was found in the Amaranthaceae plant, Celosia cristata, that is susceptible to the pathogen. The content of 1 in Celosia seedlings was quantified as 1.4 μg/g fresh weight A new isoflavone, cristatein (5-hydroxy-6-hydroxymethyl-7,2′-dimethoxyisoflavone, 2), and five known flavonoids were also identified.

Bioscience, Biotechnology, and Biochemistry published new progress about 110204-45-0. 110204-45-0 belongs to dioxole, auxiliary class Flavonoids, name is 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, and the molecular formula is C9H7NO4, Related Products of dioxole.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Senda, Yasuhisa published the artcileCarbon-13 NMR spectra of methyl-1,3-dioxolanes, Application In Synthesis of 1193-11-9, the publication is Bulletin of the Chemical Society of Japan (1977), 50(10), 2813-14, database is CAplus.

The ¹³C NMR spectra of 13 Me substituted 1,3-dioxolanes were measured. The carbon chem. shifts of the Me groups imply that the 1,3-transannular nonbonded interaction of the Me groups is negligible, except in the cases of 2,2,4-trimethyl- and 2,2,4,5-tetramethyl-1,3-dioxolanes.

Bulletin of the Chemical Society of Japan published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C4H6N2, Application In Synthesis of 1193-11-9.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Tahara, S. published the artcileSimple flavones possessing complex biological activity, Name: 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, the publication is Studies in Natural Products Chemistry (2000), 457-505, database is CAplus.

A review with 87 references Two simple flavones, each of which exhibits distinct biol. activity despite their closely related structures, have been recognized by detailed bioassays, and bioassay-oriented isolation procedures. The identity of both flavones has been confirmed by synthesis. One of these compounds, 5-methoxy-6,7-methylenedioxyflavone has been found in an extract of Polygonum lapathifolium L. subsp. nodosum (Polygonaceae) using a screening test devised to detect antidotes against the benzimidazole fungicide, benomyl (or its active principle MBC, 1H-benzimidazol-2-ylcarbamic acid Me ester). The other compound, 5-hydroxy-6,7-methylenedioxyflavone, is a host-specific signalling substance that exudes from spinach roots and attracts zoospores of the phytopathogenic fungus Aphanomyces cochlioides the cause of spinach root rot. This review describes the bioassay, isolation and identification of these active compounds, and compares their activity with that of various other related, and unrelated, chems. of either plant or synthetic origin. The possible ecochem. role and mode of action of flavone and non-flavone antidotes and attractants is briefly discussed.

Studies in Natural Products Chemistry published new progress about 110204-45-0. 110204-45-0 belongs to dioxole, auxiliary class Flavonoids, name is 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, and the molecular formula is C8H8O3, Name: 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Msutu, Ath’enkosi published the artcileAcetals: a new organocatalysis chemotype for one-pot enantioselective α-amination, Name: 1,4-Dioxaspiro[4.5]decane, the publication is Tetrahedron Letters (2014), 55(14), 2295-2298, database is CAplus.

Conditions are described for one-pot Bronsted acid and organocatalyzed enantioselective α-amination of acetals and associated functionalities. Of the organocatalysts screened, proline tetrazole gave the highest ee, while aqueous monochloroacetic acid proved to be the best Bronsted acid activator regarding minimizing racemization and maximizing product yield. The reaction opens up the way for using masked carbonyl functionalities in organocatalysis.

Tetrahedron Letters published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, Name: 1,4-Dioxaspiro[4.5]decane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Xu, Yu-lin published the artcileSynthesis of cyclohexanone ethylene ketal using H₃PW₁₂O₄₀/SiO₂ as catalyst, Formula: C8H14O2, the publication is Jingxi Huagong (2013), 30(6), 614-617, 655, database is CAplus.

A new environmental friendly catalyst, H₃PW₁₂O₄₀/SiO₂ was prepared by the sol-gel method, and characterized by means of FTIR and XRD. Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethylene glycol using H₃PW₁₂O₄₀/SiO₂ as catalyst. The influence factors on the yield of cyclohexanone ethylene ketal were also discussed. The optimum conditions were identified: molar ratio of cyclohexanone to ethylene glycol is 1:1.3, mass fraction of catalyst to reactants is 1.2%, cyclohexane dosage is 3 mL and reaction time is 45 min. The yield of cyclohexanone ethylene ketal can reach 89.7% under the optimum conditions.

Jingxi Huagong published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C13H10F2, Formula: C8H14O2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Wang, Wen-lan published the artcileSynthesis of vanillin propylene glycol acetal over different molecular sieve catalysts, COA of Formula: C11H14O4, the publication is Huaxue Gongchengshi (2009), 23(4), 1-3, database is CAplus.

The vanillin 1,2-propylene glycol acetal was synthesized using vanillin and 1,2-propylene glycol as starting materials and HZSM-5, HY, H beta, HMCM-22, HMCM-41 different type mol. sieve as the catalyst. The catalysts were characterized by means of N₂ adsorption-desorption and FT-IR of adsorption pyridine. The results indicate that the HMCM-22 mol. sieve has the higher activity and the each kind of mol. sieve active order is: HMCM-22 > H beta > USY > HY > HZSM-5 > HMCM-41. The higher activity was due to the large secondary pore structure of HMCM-22 mol. sieve and the suitable acidity.

Huaxue Gongchengshi published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C17H29BO2, COA of Formula: C11H14O4.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Li, Ming published the artcileA study on the cataluminescence of propylene oxide on FeNi layered double hydroxides/graphene oxide, COA of Formula: C6H12O2, the publication is New Journal of Chemistry (2021), 45(26), 11823-11830, database is CAplus.

In this work, FeNi layered double hydroxides/graphene oxide (FeNi LDH/GO) was prepared, which exhibits excellent selective cataluminescent performance towards propylene oxide. The selectivity and sensitivity of the cataluminescence (CTL) reaction were investigated in detail. Moreover, the catalytic reaction mechanism, including the intermediate products and the conversion of reactants to products, was discussed based on both the exptl. and computational results. Furthermore, the proposed FeNi LDH/GO based CTL sensor was successfully applied for the determination of propylene oxide residue in fumigated raisins, which indicates extensive application potential for rapid food safety evaluation.

New Journal of Chemistry published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C6H12O2, COA of Formula: C6H12O2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Du, Bin published the artcileStudy on catalytic synthesis of ethylene glycol cyclohexanone ketal by ferric solid superacid, Recommanded Product: 1,4-Dioxaspiro[4.5]decane, the publication is Liaoning Huagong (2012), 41(11), 1133-1135, database is CAplus.

Cyclohexanone ethylene glycol ketal was synthesized from cyclohexanone and ethylene glycol by using ferric solid superacid as the catalyst and cyclohexane as the water-carrying agent. The experiment results show that the ferric solid superacid has high activity and good stability; optimal synthesis conditions are as follows: molar ratio of cyclohexanone to ethylene glycol is 1:14, mass ratio of cyclohexanone to the catalyst is 32.8:1, volume ratio of cyclohexanone to cyclohexane is 2.08:1, and reaction time is 1 h. Under above conditions, the yield of cyclohexanone ethylene glycol ketal is over 86%.

Liaoning Huagong published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, Recommanded Product: 1,4-Dioxaspiro[4.5]decane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Qian, Deyun published the artcileGold(I)-catalyzed highly diastereo- and enantioselective alkyne oxidation/cyclopropanation of 1,6-enynes, Application of (R)-5,5′-Bis(diphenylphosphino)-2,2,2′,2′-tetrafluoro-4,4′-bi-1,3-benzodioxole, the publication is Angewandte Chemie, International Edition (2014), 53(50), 13751-13755, database is CAplus and MEDLINE.

A highly enantioselective oxidative cyclopropanation of 1,6-enynes catalyzed by cationic Au^I/chiral phosphoramidite complexes was presented. The new method provided convenient access to densely functionalized bicyclo[3.1.0]hexanes bearing three contiguous quaternary and tertiary stereogenic centers with high enantioselectivity (up to e.r. 98:2). Control experiments suggested that the quinoline moiety of the β-gold vinyloxyquinolinium intermediate in the reaction played an important role in promoting good enantioselectivity through a transitional auxiliary effect in the transition state.

Angewandte Chemie, International Edition published new progress about 503538-69-0. 503538-69-0 belongs to dioxole, auxiliary class (Atropisomeric Bisphosphine Ligands, name is (R)-5,5′-Bis(diphenylphosphino)-2,2,2′,2′-tetrafluoro-4,4′-bi-1,3-benzodioxole, and the molecular formula is C38H24F4O4P2, Application of (R)-5,5′-Bis(diphenylphosphino)-2,2,2′,2′-tetrafluoro-4,4′-bi-1,3-benzodioxole.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem