Government Degree College at Amadala valasa

Srīkākulam, India

Government Degree College at Amadala valasa

Srīkākulam, India

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Zhang J.,Jilin Agricultural University | Yang S.-X.,Jilin Agricultural University | Yang X.-B.,Jilin Agricultural University | Li M.-Y.,CAS South China Sea Institute of Oceanology | And 4 more authors.
Chemical and Pharmaceutical Bulletin | Year: 2010

Two new mexicanolides, named xylomexicanolides A and B, were isolated from the seeds of an Indian mangrove, Xylocarpus moluccensis, together with four known limonoids, khayasin, angolensic acid methyl ester, khayasin T, and 2'S-methylbutanoylproceranolide. The structures of these limonoids were established on the basis of spectroscopic data. The 13C-NMR data of khayasin were reported for the first time. Khayasin was found to exhibit marked insecticidal activity against the fifth instar larvae of Brontispa longissima (GESTRO) at a concentration of 10 mg/l. © 2010 Pharmaceutical Society of Japan.


Wu J.,CAS South China Sea Institute of Oceanology | Yang S.-X.,Jilin Agricultural University | Li M.-Y.,CAS South China Sea Institute of Oceanology | Li M.-Y.,University of Chinese Academy of Sciences | And 5 more authors.
Journal of Natural Products | Year: 2010

Six new phragmalins, moluccensins H-M (1-6), two new andirobin-type limonoids, moluccensins N and O (7, 8), and two new tirucallane derivatives, moluccensins P and Q (9, 10), were isolated from seeds of an Indian mangrove, Xylocarpus moluccensis, together with the known compound 3β,22S- dihydroxytirucalla-7,24-dien-23-one. The structures of these compounds were established on the basis of spectroscopic data. Moluccensins H-L were phragmalins with a C-30 carbonyl group, and moluccensin M was a unique ring-D-opened 16-norphragmalin. Moluccensins H-J possess conjugated Δ8,9 and Δ14,15 double bonds, moluccensins K and L contain a Δ8,14 double bond, and moluccensin M has a characteristic C15-C30 linked five-membered lactone ring. Moluccensins H and I showed moderate insecticidal activity against the fifth instar larvae of Brontispa longissima (Gestro) at a concentration of 100 mg/L. © 2010 The American Chemical Society and American Society of Pharmacognosy.


Li J.,CAS South China Sea Institute of Oceanology | Li J.,University of Chinese Academy of Sciences | Li M.-Y.,CAS South China Sea Institute of Oceanology | Li M.-Y.,University of Chinese Academy of Sciences | And 5 more authors.
Phytochemistry | Year: 2010

Ten limonoids, named godavarins A-J (1-7, 9-11), were isolated from seeds of an Indian mangrove (Xylocarpus moluccensis) collected in the mangrove wetlands of Godavari estuary, Andhra Pradesh. Eight known limonoids, viz. xyloccensins L (8), P (12), Q (13), mexicanolide (14), 6-deoxy-3-detigloyl- swietenine acetate (15), fissinolide (16), methyl 3β-acetoxy-1-oxomeliaca- 8(30),14-dienoate (17), and methyl 3β-acetoxy-1-oxomeliaca-8(9),14-dienoate (18), were also obtained. The structures of these compounds were established on the basis of spectroscopic data or comparison with data in the literature (known compounds). The stereostructure of godavarin D was confirmed by means of single-crystal X-ray analysis. Godavarins A-C are the first mexicanolide derivatives with a C7-C28 ester-linked δ-lactone ring, while godavarins D-G are further additions to the small group of limonoids with a C1-C29 oxygen bridge. Godavarin H is a phragmalin with five acetoxy groups. Two limonoids, mexicanolide and fissinolide, were found to exhibit marked antifeedant activity against the third-instar larvae of Brontispa longissima (Gestro) at a concentration of 0.5 mg/mL. The most potent compound was mexicanolide. It also showed moderate insecticidal activity. © 2010 Elsevier Ltd. All rights reserved.


Li J.,CAS South China Sea Institute of Oceanology | Li J.,University of Chinese Academy of Sciences | Li M.-Y.,CAS South China Sea Institute of Oceanology | Li M.-Y.,University of Chinese Academy of Sciences | And 2 more authors.
Helvetica Chimica Acta | Year: 2011

Godavarin K (1), a new limonoid with an oxygen bridge between C(1) and C(29), was obtained from seeds of an Indian mangrove, Xylocarpus moluccensis, together with a known tetranortriterpene, 6-de(acetyloxy)-7-deacetylchisocheton compound E (=(5α,7α,13α,17α)-7-hydroxy-4,4,8-trimethyl- 3-oxocarda-1,14-dienolide; 2). The structure of godavarin K was established on the basis of spectroscopic data. In addition, the confusion of 1H- and 13C-NMR data for compound 2 in previous literature was clarified. Copyright © 2011 Verlag Helvetica Chimica Acta AG, Zürich, Switzerland.


Li M.-Y.,Jinan University | Xiao Q.,Jiangxi Science and Technology Normal University | Satyanandamurty T.,Government Degree College at Amadala Valasa | Wu J.,Jinan University
Chemistry and Biodiversity | Year: 2014

Ten limonoids, named granatumins L-U (1-10, resp.), were isolated from the seeds of an Indian mangrove, Xylocarpus granatum, collected in the estuary of Krishna, Andhra Pradesh. The structures of these compounds were established on the basis of spectroscopic data. The relative configuration of granatumin L (1) was confirmed by a single-crystal X-ray diffraction analysis. Granatumins L-T (1-9, resp.) belong to the small group of limonoids with an oxygen bridge between C(1) and C(29), while granatumin U (10) is a 28-Me-oxidized mexicanolide. This is the first report of limonoids with an Obridge between C(1) and C(29) from the Indian X. granatum. The pronounced structural diversity of limonoids from this mangrove might originate from environmental factors. © 2014 Verlag Helvetica Chimica Acta AG, Zürich.


Chen H.,Jilin Agricultural University | Zhang J.,Jilin Agricultural University | Li M.-Y.,CAS South China Sea Institute of Oceanology | Satyanandamurty T.,Government Degree College at Amadala Valasa | Wu J.,CAS South China Sea Institute of Oceanology
Chemistry and Biodiversity | Year: 2013

Two new mexicanolides, named granatumins H and I (1 and 2, resp.), and two phragmalins, named granatumins J and K (3 and 4, resp.), were isolated from the seeds of an Indian mangrove, Xylocarpus moluccensis, collected from the swamps of Krishna estuary, Andhra Pradesh. The structures of these limonoids were established on the basis of spectroscopic data. Granatumin J (3) is a highly oxidized phragmalin with five AcO groups, whereas granatumin K (4) is the first phragmalin found in nature with conjugated C(8)=C(30) and C(14)=C(15) bonds. Copyright © 2013 Verlag Helvetica Chimica Acta AG, Zürich.


Chen W.,CAS South China Sea Institute of Oceanology | Chen W.,University of Chinese Academy of Sciences | Shen L.,Jinan University | Li M.,Jinan University | And 3 more authors.
Fitoterapia | Year: 2014

Four new limonoids, named granatumins V-Y (1-4), belonging to the small group of limonoids with a C1-C29 oxygen bridge and a â̂†8,30 double bond, were isolated from the seeds of an Indian mangrove, Xylocarpus granatum, collected in the swamp of Krishna estuary, Andhra Pradesh. The constitutions and absolute configurations of these compounds were established by extensive NMR investigations, single-crystal X-ray crystallography using Cu Kα radiation, and by the comparison of circular dichroism spectrum. © 2014 Elsevier B.V.


Li J.,CAS South China Sea Institute of Oceanology | Li J.,University of Chinese Academy of Sciences | Li M.-Y.,CAS South China Sea Institute of Oceanology | Bruhn T.,University of Würzburg | And 6 more authors.
Chemistry - A European Journal | Year: 2012

Five new limonoids, including andhraxylocarpins A and B (1 and 2) which contain a 9-oxa-tricyclo[3.3.2.17, 10]undecane-2-ene motif, andhraxylocarpins C and D (3 and 4), which contain a (Z)-bicyclo[5.2.1]dec-3-en- 8-one substructure, and andhraxylocarpin E (5), which contains a tricyclo[3.3.1.13, 6]decane-9-one scaffold, were isolated from the seeds of two true mangroves, Xylocarpus granatum and Xylocarpus moluccensis, that were collected in the estuaries of Andhra Pradesh, India. The absolute configurations of these compounds were determined by extensive NMR investigations, single-crystal X-ray diffraction analysis, and by circular dichroism and optical rotatory dispersion spectroscopy, in combination with quantum-chemical calculations. The pronounced structural diversity of limonoids from these mangroves might originate from environmental factors. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Wang H.,CAS South China Sea Institute of Oceanology | Wang H.,China Three Gorges University | Li M.-Y.,Jinan University | Katele F.Z.,University of Würzburg | And 3 more authors.
Beilstein Journal of Organic Chemistry | Year: 2014

Decandrinin (1), an unprecedented C9-spiro-fused 7,8-seco-ent-abietane, was obtained from the bark of an Indian mangrove, Ceriops decandra, collected in the estuary of Godavari, Andhra Pradesh. The constitution and the relative configuration of 1 were determined by HRMS (ESI) and extensive NMR investigations, and the absolute configuration by circular dichroism (CD) and optical-rotatory dispersion (ORD) spectroscopy in combination with quantum-chemical calculations. Decandrinin is the first 7,8- seco-ent-abietane. © 2014 Wang et al; licensee Beilstein-Institut.


PubMed | Jinan University, University of Würzburg and Government Degree College at Amadala valasa
Type: | Journal: Organic letters | Year: 2016

Krishnadimer A (1a), a C

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