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Zhishi Ye et al.
The Journal of organic chemistry, 75(17), 6043-6045 (2010-08-28)
A palladium-catalyzed addition of arylboronic acids to phthalaldehyde, followed by an intramolecular lactonization to access 3-substituted phthalides, is described. The procedure tolerates a series of functional groups, such as methoxyl, fluoro, chloro, and trifluoromethyl groups. It represents a procedure for
Alejandra León et al.
Natural product research, 25(13), 1234-1242 (2011-07-30)
The chemical constituents of the organic extracts from the rhizomes of Ligusticum porteri were isolated, characterised and identified as Z-ligustilide, Z-butylidenephthalide, diligustilide, tokinolide B, riligustilide, senkyunolides F and I, ferulic acid, among other known compounds. The preparation of 4,5-dehydrotokinolide B
Juan Mangas-Sánchez et al.
Organic letters, 14(6), 1444-1447 (2012-03-08)
A straightforward synthesis of (S)-3-methylphthalides has been developed, with the key asymmetric step being the bioreduction of 2-acetylbenzonitriles. Enzymatic processes have been found to be highly dependent on the pH value, with acidic conditions being required to avoid undesired side
Jaganathan Karthikeyan et al.
Chemical communications (Cambridge, England), 47(37), 10461-10463 (2011-08-19)
A cobalt-catalyzed addition of aryl- and alkenylboronic acids to aldehydes and phthalaldehyde to give the corresponding biarylketones and 3-aryl phthalides in good to excellent yields in one pot is described.
Xiang-Dong Fei et al.
The Journal of organic chemistry, 77(22), 10321-10328 (2012-10-30)
A novel and highly efficient strategy for the synthesis of isocoumarins and phthalides through a palladium(0)-catalyzed reaction incorporating tert-butyl isocyanide has been developed. This process, providing one of the simplest methods for the synthesis of this class of valuable lactones
R Santhosh Reddy et al.
Organic & biomolecular chemistry, 10(18), 3655-3661 (2012-04-13)
The asymmetric dihydroxylation (AD) of o-cyano cinnamates and styrene derivatives leads to efficient construction of chiral phthalide frameworks in high optical purities. This unique reaction is characterized by unusual synergism between CN and osmate groups resulting in rate enhancement of
Jian Huang et al.
Journal of Asian natural products research, 15(12), 1237-1242 (2013-11-28)
Two new phthalides, chuanxiongdiolides A and B, were isolated from the roots of Ligusticum chuanxiong Hort. Their structures were established by UV, IR, 1D (¹H, ¹³C) and 2D (HSQC, ¹H-¹H COSY, HMBC, NOESY) NMR, and HR-ESI-MS methods, and their absolute
Xiao-Long Yang et al.
The Journal of antibiotics, 64(11), 723-727 (2011-09-15)
Three new phthalide derivatives (1-3) named 5-(3'-methyl-2'-butenyl)-2-hydroxy-3-methoxy-4-methylbenzoic acid (1), 5-(3'-carboxyl-3'-methyl-2E-allyloxy)-3-methoxy-4-methylphthalide (2) and 5-(3',3'-dimethylallyloxy)-2-methoxycarbonyl-3-methoxy-4-methylbenzoic acid (3) together with six known phthalide derivatives named 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalide (4), zinnimidine (5), 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalide (6), 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalic acid (7), zinniol anhydride (8) and porriolide (9) were isolated from
Vatcharin Rukachaisirikul et al.
Journal of natural products, 75(5), 853-858 (2012-04-25)
Nine new fungal metabolites, one phthalide derivative, acremonide (1), and eight isocoumarin derivatives, acremonones A-H (2-9), were isolated from the mangrove-derived fungus Acremonium sp. PSU-MA70 together with 10 known compounds. Their structures were determined by NMR analysis. The known 8-deoxytrichothecin
Dipakranjan Mal et al.
The Journal of organic chemistry, 76(9), 3392-3398 (2011-03-17)
The annulation of phthalides with α-alkyl/arylacrylates in the presence of LDA/LHMDS is shown to directly give alkyl/aryl-1-naphthols. The method involving a novel dealkoxycarbonylation obviates the regiochemical issues in the synthesis of polysubstituted naphthalenes, and it forms the key step in
Beeraiah Baire et al.
Nature protocols, 8(3), 501-508 (2013-02-16)
The hexadehydro-Diels-Alder (HDDA) cascade enables the synthesis of complex benzenoid products with various substitution patterns through aryne intermediates. The first stage of this cascade involves the generation of a highly reactive ortho-benzyne intermediate by a net [4+2] cycloisomerization of a
Tsz-Ying Yuen et al.
Organic letters, 14(19), 5154-5157 (2012-09-29)
A highly convergent total synthesis of 7',8'-dihydroaigialospirol is described. Key steps of the synthesis include a Nozaki-Hiyama-Kishi (NHK) coupling of an iodoalkyne with an advanced phthalide-aldehyde and a remarkable one-pot acid-mediated global deprotection/spiroacetalization.
Xue Qiao et al.
Journal of pharmaceutical and biomedical analysis, 54(4), 789-798 (2010-11-26)
A sensitive LC/MS method was established to investigate the in vivo metabolism of GuanXin II prescription, a five-component Chinese herbal medicine formulation. Rat plasma, bile, urine, and feces were collected and analyzed following oral administration of the water decoction. A
Peng Shao et al.
Chemical & pharmaceutical bulletin, 58(12), 1650-1654 (2010-12-09)
Five new compounds (1-5), were isolated from the rhizomes of Matteuccia orientalis (HOOK.) TREV. The structures of new compounds were elucidated on the basis of their 1D-, 2D-NMR, MS, IR and circular dichroism (CD) data.
Jian-Guang Xing et al.
Journal of Asian natural products research, 13(12), 1069-1073 (2011-11-26)
Two new compounds, 7-hydroxy-5-methoxy-4,6-dimethyl-7-O-α-L-rhamnosyl-phthalide and 7-hydroxy-5-methoxy-4,6-dimethyl-7-O-β-D-glucopyranosyl-phthalide, along with one known and related metabolite 7-hydroxy-5-methoxy-4,6-dimethylphthalide were isolated from the EtOAc extract of fermentation broth of an endophytic fungus Pestalotiopsis heterocornis. The structures of these compounds were elucidated on the basis of
Yuki Hirakawa et al.
Journal of agricultural and food chemistry, 63(28), 6325-6330 (2015-07-15)
An immunosensor based on surface plasmon resonance (SPR-sensor) was developed to analyze chlorothalonil residues and maximum residue limits (MRLs; 0.5-50 mg/kg) in vegetables in Japan. Conjugates of N-(pentachlorophenoxyacetyl)glycine and bovine serum albumin were covalently coated on the sensor chip. The
Dario C Gerbino et al.
Organic letters, 14(9), 2338-2341 (2012-04-24)
The surprisingly facile conversion (isomerization) of 2-formyl-arylketones into 3-substituted phthalides, as observed for the marine natural product pestalone and its per-O-methylated derivative, was investigated using a series of simple 2-acylbenzaldehydes as substrates. The transformation generally proceeds smoothly in DMSO, either
Fangrui Zhong et al.
Journal of the American Chemical Society, 134(24), 10222-10227 (2012-05-25)
Phthalides were used for the first time in the allylic alkylation reactions with MBH carbonates for the creation of chiral 3,3-disubstituted phthalides. Highly enantioselective regiodivergent synthesis of γ-selective or β-selective allylic alkylation products was achieved by employing bifunctional chiral phosphines
Yun Wei et al.
Journal of chromatography. A, 1284, 53-58 (2013-03-15)
The phthalide compounds of Chuanxiong rhizoma including senkyunolide A, levistolide A, Z-ligustilide and 3-butylidenephthalide, have been reported as the biologically active compounds because of their therapeutic effects. In this work, online high-speed counter-current chromatography coupled with semi-preparative liquid chromatography instrument
Prithiba Mitra et al.
Organic & biomolecular chemistry, 10(14), 2742-2752 (2012-03-01)
The synthesis of stilbenoids and styryl carboxylic acids is accomplished with high E-stereoselectivity by olefination of aldehydes with thiophthalides under basic conditions. The olefination is highly atom-efficient as it only loses elemental sulfur during the reaction. This olefination, in conjunction
Kamolchanok Tianpanich et al.
Journal of natural products, 74(1), 79-81 (2010-12-23)
Five known isocoumarins, monocerin (1), derivative 2, and fusarentin derivatives 3-5, and a new phthalide (6) were isolated from the endophytic fungus Colletotrichum sp. 2 selectively exhibited cytotoxic activity toward the HepG2 cell line. Compounds 2 and 4 scavenged 2,2-diphenyl-1-picrylhydrazyl
Bin Xiao et al.
Bioorganic & medicinal chemistry, 20(16), 4954-4961 (2012-07-24)
On the basis of a marine fungal phthalide (paecilocin A) skeleton, we synthesized 20 analogs and evaluated them for peroxisome proliferator-activated receptor gamma (PPAR-γ) binding and activation. Among these analogs, 6 and 7 had significant PPAR-γ binding activity, and 7
Jie Luo et al.
Chemical communications (Cambridge, England), 48(39), 4707-4709 (2012-04-11)
The first Mannich reaction employing phthalides using a quinidine-based multifunctional catalyst has been developed. The reported method led to the synthesis of 3,3-disubstituted phthalide derivatives in excellent yields, with good diastereo- and enantioselectivities. Convenient synthesis of chiral isoquinolinones and isoquinolines
Xing-Nuo Li et al.
Natural product research, 26(19), 1782-1786 (2011-09-20)
The phytochemical investigation of extracts from the radix of Angelica sinensis yielded a new phthalide dimer, 3,3'Z-6.7',7.6'-diligustilide, along with a known dimer, levistolide A. Their structures were established on the basis of spectral data, particularly using 1D-NMR and several 2D
Li Li et al.
Chirality, 24(12), 987-993 (2012-07-19)
Absolute configurations (ACs) of 3-alkylphthalides including natural products (-)-3-n-butylphthalide ((-)-1) and fuscinarin have been studied using chiroptical properties and quantum chemical calculation. Electronic circular dichroism and optical rotatory dispersion spectra of (S)-1 predicted adopting time-dependent density functional theory and hybrid
Chang-Yin Li et al.
Journal of pharmaceutical and biomedical analysis, 55(1), 146-160 (2011-02-01)
In this work, the metabolite profiles of Danggui Buxue Tang (DBT) in rat bile and plasma were qualitatively described, and the possible metabolic pathways of DBT were subsequently proposed. Emphasis was put on correlative analysis of metabolite profiling in different
Song-Hwa Chae et al.
Journal of agricultural and food chemistry, 59(15), 8193-8198 (2011-07-07)
The residual contact toxicity of three benzofuranoids (Z)-butylidenephthalide (1), (3S)-butylphthalide (2), and (Z)-ligustilide (3) identified in the rhizome of Cnidium officinale (Apiaceae) to B- and Q-biotype females of Bemisia tabaci was evaluated using a leaf-dip bioassay. Results were compared with
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