Browsing by Author "Das, B."
Now showing items 1-18 of 18
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Anti-bacterial compounds from the sponge Haliclona sp.
Parameswaran, P.S.; Kamat, S.Y.; Chandramohan, D.; Nair, S.; Das, B. (New Delhi: Oxford & IBH, 1992)The crude methanolic extract of the sponge Haliclona sp., collected off Gujarat coast exhibited promising anti-viral (in vitro, 75%) and anti-bacterial properties Partitioning of the extract between various organic solvents, ... -
Antispasmodic and Anti-inflammatory activity of Carrageenan from Hypnea Musciformis Wulfen
Solimabi; Das, B. (Indian�Pharmacological Society, 1980)Pharmacological studies on K-carrageenan extracted from Hypnea musciformis have shown that it antagonizes histamine-induced spasm in guineapig ielum and possesses anti-inflammatory activity against rat hind paw oedema ... -
Bioactivity of marine organisms. 4. Screening of some marine animals from the Indian coast
Naik, C.G.; Kamat, S.Y.; Parameswaran, P.S.; Das, B.; Battacharya, J.; Ramani, P.; Bhakuni, D.S.; Goel, A.K.; Jain, S.; Srimal, R.C. (Indian Association for Limnology and Oceanography, 1989)Of twenty eight alcoholic extracts of marine organisms screened for a wide range of pharmacological activities, 15 showed biological activity. Of these two were anti implantation, 3 CNS stimulant, 2 hypotensive, 4 diuretic, ... -
Bioactivity of marine organisms. Part 5. Screening of some marine fauna from the Indian coast
Naik, C.G.; Kamat, S.Y.; Parameswaran, P.S.; Das, B.; Patel, J.; Ramani, P.; Bhakuni, D.S.; Goel, A.K.; Jain, S.; Srimal, R.C. (National Institute of Oceanography, India, 1990) -
Bromine and Iodine Content in Sponges and Algae of the Andaman Sea
Solimabi; Das, B.; Mittal, P.K.; Kamat, S.Y. (CSIR-NISCAIR, 1981)Br and I contents were determined spectrophotometrically in 12 species of sponges and 16 species of algae(red, brown and green). These elements on dry weight basis varied from 0.025 to 1.29% for Br and from 0.001 to 0.085% ... -
Constituents of the brown alga Padina tetrastromatica (Hauck)-II
Parameswaran, P.S.; Naik, C.G.; Das, B.; Kamat, S.Y.; Bose, A.K.; Nair, M.S.R. (NISCAIR, CSIR, 1996)Three terpenoids, (2R,4S)-4-acetoxy-2-hydroxy-2,6,6-trimethylcyclohexanone (1), 3'R,4'-[(2R,4S)-4-acetoxy-2-hydroxy-2,6,6-trimethylcyclohexylidene] but-3'-en-2'-one or apo-9'-fucoxanthinone (2) and loliolide (3) have been ... -
Distribution of iodine in marine algae of Goa region
Solimabi; Das, B. (CSIR-NISCAIR, 1977) -
Echinoside-B from the Lakshadweep sea cucumber Actinopyga mauritiana (Quoy and Gaimard)
Parameswaran, P.S.; Naik, C.G.; Das, B.; Kamat, S.Y. (NISCAIR, New Delhi, 1991)Brine-shrimp assay guided purification of the methanolic extract of the sea cucumber Actinopyga mauritiana yields echinoside-B as a major toxic constituent. The compound has been characterized based on its spectral data. -
Halogenated terpenoids from the brown alga Padina tetrastromatica (HAUCK)
Parameswaran, P.S.; Bhat, K.L.; Das, B.; Kamat, S.Y.; Harnos, S. (CSIR-NISCAIR, 1994)Three novel halogenated norsesquiterpenoids, 2-chloro-2, 6, 10-trimethylundecanoic acid (1), its 2-bromo analog (2) and methyl 2-chloro-2-carboxy-6, 10-dimethylundecanoate (3), alongwith fucosterol, 7-ketocholesterol as ... -
Lipid contents of the sponge Haliclona sp.
Parameswaran, P.S.; Das, B.; Kamat, S.Y. (CSIR-NISCAIR, 1994)Several fatty acids, sterols, batyl alcohol and its analogs and an N-acylated sphingosine (ceramide) have been isolated from the lipid fraction of the extract of the sponge Haliclona sp. The major sterol is found to be ... -
Marine natural products. 2. Characterisation of lipid fraction from the sony coral Porites lutea
Naik, C.G.; Parameswaran, P.S.; Das, B. (Current Science Association, 1984) -
Minor sterols from the sponge Ircinia ramosa (Killer)
Parameswaran, P.S.; Naik, C.G.; Das, B.; Kamat, S.Y. (Oxford and IBH, New Delhi, 1992)Three sterols, isolated from the lipid fraction of the sponge Ircinia ramosa were characterised as cholest-5-en-3 beta-ol-7-one (7-oxo cholesterol, 1), cholest 5-23-dien-b beta ol-7-one (7-oxo demosterol, 2) and 24E-ethyl ... -
On solubility of aluminium in distilled water heated to different temperatures
Anand, S.P.; Das, B.; Shirodkar, P.V. (Indian Association for Limnology and Oceanography, 1979) -
Oxytocic principle of Red alga Amphiroa fragilissima
Wahidullah, S.; DeSouza, L.; Das, B.; Patnaik, G.K. (Walter de Gruyter, Berlin, 1987)The crude aqueous methanolic extract of the marine red alga @iAmphiroa fragilissima@@ has been reported as exhibiting oxytocic and spasmogenic activity at a dose of 50 ~kg/ml. The activity is located in the water soluble ... -
Quinolizidines alkaloids: Petrosin and xestospongins from the sponge Oceanapia sp.
Singh, K.S.; Das, B.; Naik, C.G. (Indian Academy of Sciences, 2011)A bisquinolizidine alkaloid, petrosin (1) and a series of bis-1-oxaquinolizidine, xestospongins (2–9), were obtained from the ethyl acetate extract of the sponge Oceanapia sp. Petrosin was obtained along with xestospongin- ... -
Sterols from the Lakshadweep sponge, Ircinia ramosa (Killer)
Parameswaran, P.S.; Naik, C.G.; Das, B.; Kamat, S.Y. (CSIR-NISCAIR, 1989)Four monohydroxy sterols, viz, (22E,24S)-24-methylcholest-5,22-dien-3(beta)-ol (3), cholesterol (4), 24(Xi)-ethylcholesterol (8) and the corresponding Delta super(4)-3 ketones, viz. (22E,24S)-24-methylcholest-4,22-dien-3-one ... -
Sterols from the soft coral Lobophytum strictum (Alcyonarian) from Lakshadweep sea
Parameswaran, P.S.; Naik, C.G.; Das, B.; Kamat, S.Y. (CSIR-NISCAIR, 1989)Two polyhydroxy sterols 24(Xi)-methylcholestane-3(beta), 5a, 6(beta), 25-tetrol, 25-monoacetate, and 24S-methylcholestane-3(beta), 4(beta), 5(beta), 25-tetrol-6-one, 25-monoacetate (lo-bosterol), six monohydroxy sterols ... -
Two simple amine hydrochlorides from the soft coral Lobophytum strictum
Parameswaran, P.S.; Naik, C.G.; Das, B.; Kamat, S.Y. (NISCAIR, New Delhi, 1991)Two simple amine hydrochlorides, viz., 1-amino-1, 1-dimethyl-3-oxo-butane hydrochloride (1) (Diacetonamine) and 2, 2, 6, 6-tetramethylpiperidone hydrochloride (2) have been isolated from the fraction of the methanolic ...