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Showing 1 to 7 of 7 entries
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Phytochemical composition, antiparasitic and α-glucosidase inhibition activities from .

Chemistry Central journal

López D, Cherigo L, Spadafora C, Loza-Mejía MA, Martínez-Luis S.
PMID: 26435737
Chem Cent J. 2015 Sep 28;9(1):53. doi: 10.1186/s13065-015-0130-3. eCollection 2015 Dec.

BACKGROUND: Panama has an extensive mangrove area and it is one of the countries with the highest biodiversity in America. Mangroves are widely used in traditional medicine, nevertheless, there are very few studies that validates their medicinal properties in...

Formal gas-phase polar [4 + 1+] cycloaddition of ionized methylene to alpha-dicarbonyl compounds: synthesis of 2-unsubstituted 1,3-dioxoles.

Journal of mass spectrometry : JMS

Meurer EC, Cabrini LG, Gozzo FC, Eberlin MN.
PMID: 16604574
J Mass Spectrom. 2006 Jun;41(6):735-40. doi: 10.1002/jms.1029.

Ion/molecule reactions of +CH2OCH2. with alpha-dicarbonyl compounds were performed via pentaquadrupole mass spectrometry. Besides the previously known [3+ + 2] 1,3-cycloaddition reaction that forms cyclic 1,3-dioxonium ions, an unprecedented reaction proceeding formally by [4 + 1+] cycloaddition of ionized...

Facile conversion of o-quinones into 1,3-dioxoles.

Organic letters

Batanero B, Barba F.
PMID: 15957892
Org Lett. 2005 Jun 23;7(13):2567-9. doi: 10.1021/ol050614e.

[reaction: see text] o-Quinones are transformed into the corresponding 1,3-dioxoles in a single-step process by cathodic reduction in dichloromethane.

α-Glucosidase inhibitors from a mangrove associated fungus, .

BMC chemistry

Lopéz D, Cherigo L, Mejia LC, Loza-Mejía MA, Martínez-Luis S.
PMID: 31384771
BMC Chem. 2019 Feb 07;13(1):22. doi: 10.1186/s13065-019-0540-8. eCollection 2019 Dec.

No abstract available.

An Approach Toward Oxidopyrylium Ylides Using Rh(II)-Catalyzed Cyclization Chemistry.

Tetrahedron letters

Padwa A, Boonsombat J, Rashatasakhon P.
PMID: 20953288
Tetrahedron Lett. 2007 Aug 20;48(34):5938-5941. doi: 10.1016/j.tetlet.2007.06.118.

The Rh(II)-catalyzed reaction of the E-isomer of 2-diazo-3,6-dioxo-6-phenyl-hex-enoic acid methyl ester was carried out in the presence of various carbonyl compounds and was found to give 1,3-dioxoles in moderate to good yield. In an attempt to prepare the starting...

A facile construction of oxygen heterocycles by the reaction of benzoxepine-4-carboxylates with dihaloalkanes and activated alkynes.

Organic & biomolecular chemistry

Kasagani VP, Kurma SH, Bhimapaka CR.
PMID: 31237599
Org Biomol Chem. 2019 Jul 21;17(27):6645-6653. doi: 10.1039/c9ob00769e. Epub 2019 Jun 25.

This manuscript describes the preparation of heterocyclic compounds such as naphtho[1,3]-dioxoles (3a-h), [1,4]-dioxines (4a-h), [1,4]-dioxepines (5a-c), [1,4]-dioxocines (6a-c) and diethyl 2-(2-ethoxy-2-oxoethyl)naphtho[1,3]dioxoles (8a-f). These heterocyclic compounds have been achieved by the reaction of benzoxepine-4-carboxylates (1a-h) with dihaloalkanes (2a-e) and activated...

Experimental Evidence of Dioxole Unimolecular Decay Pathway for Isoprene-Derived Criegee Intermediates.

The journal of physical chemistry. A

Vansco MF, Caravan RL, Zuraski K, Winiberg FAF, Au K, Trongsiriwat N, Walsh PJ, Osborn DL, Percival CJ, Khan MAH, Shallcross DE, Taatjes CA, Lester MI.
PMID: 32255634
J Phys Chem A. 2020 May 07;124(18):3542-3554. doi: 10.1021/acs.jpca.0c02138. Epub 2020 Apr 22.

Ozonolysis of isoprene, one of the most abundant volatile organic compounds emitted into the Earth's atmosphere, generates two four-carbon unsaturated Criegee intermediates, methyl vinyl ketone oxide (MVK-oxide) and methacrolein oxide (MACR-oxide). The extended conjugation between the vinyl substituent and...

Showing 1 to 7 of 7 entries