NOPR Collection:

A new sphingosine derivative and a new polyhydroxy steroidal glycoside from Sinularia gravis Tixier-Durivault of the Andaman and Nicobar Islands

1999-03-01T00:00:00Z

Title: A new sphingosine derivative and a new polyhydroxy steroidal glycoside from Sinularia gravis Tixier-Durivault of the Andaman and Nicobar Islands Authors: Anjaneyulu, V; Rao, P V Subba; Radhika, P Abstract: N-(2'-Hydroxyeicosanoyl)- 1,3,4-trihydroxy-2-aminoheptadec-5-ene 1, a new monounsaturated sphingosine derivative and a new sterol glycoside, (24 S) - 24 - methylcholest-5-ene-3β, 25-diol-3-O--L-fucopyranoside 2 have been isolated from a soft coral, Sinularia gravis Tixier-Durivault of the Andaman and Nicobar Islands. The structures of new compounds have been established from their physical, chemical and spectral data. Page(s): 357-360

Synthesis and novel reactions of 2,3-dimethyl-1H-pyrrolo[1,2-a]benzimidazol- 1-one with secondary amines and N -bromosuccinimide

1999-03-01T00:00:00Z

Title: Synthesis and novel reactions of 2,3-dimethyl-1H-pyrrolo[1,2-a]benzimidazol- 1-one with secondary amines and N -bromosuccinimide Authors: Shetgiri, N P; Kokitkar, S V Abstract: N, N-Disubstituted-β-(2-benzimidazolyl)-, β-dimethylacrylamides 5Aa-g and 5Ba-g , 2-bromomethyl-3- methyl-1 H-pyrrolo[1,2a]benzimidazol-1-one 8A and 2,3-dimethyl-1H-pyrrolo[1,2a]benzimidazole-1-thione 10A have been synthesized from 2,3-dimethyl-1 H-pyrrolo [1,2a]benzimidazol-1-one 4A. Compounds 5Aa-g and 5Ba-g have been synthesized via two different routes. These compounds have been screened for their antimicrobial and anthelmintic activities. Page(s): 312-316

Heterogeneous catalytic asymmetric aminohydroxylation of olefins using polymer-supported cinchona alkaloids

1999-03-01T00:00:00Z

Title: Heterogeneous catalytic asymmetric aminohydroxylation of olefins using polymer-supported cinchona alkaloids Authors: Nandanan, E; Phukan, Prodeep; Pais, Godwin C G; Sudalai, A Abstract: For the first time, heterogeneous osmium tetroxide catalyzed asymmetric aminohydroxylation of olefins on polymer-supported ligands have been shown to proceed with comparable rate as in the case of homogeneous conditions. Page(s): 287-291

Alcyonacean metabolites: Part 6^† - Steroid glycosides from a new species of Sinularia genus of the Andaman and Nicobar coasts

1999-03-01T00:00:00Z

Title: Alcyonacean metabolites: Part 6^† - Steroid glycosides from a new species of Sinularia genus of the Andaman and Nicobar coasts Authors: Vanisree, Mulabagal; Subbaraju, Gottumukkala V; Rao, Ch. Bheemasankara Abstract: Three steroid glycosides, 24-methylenecholest-5-en-3β, 16 β -diol 3-O--L-fucoside 1, 24-methylenecholest-5-en-3β, 7β, 16β -triol-3- O--L-fucoside 2, and 24-methylenecholest-5-en-3β, 7β, 16β -triol- 4'-acetyl-3-O--L-fucopyranoside 4, in addition to 24- methylenecholesterol have been isolated from a new species of Sinularia genus of the Andaman and Nicobar coasts. Page(s): 394-396

NOPR Collection:

A new sphingosine derivative and a new polyhydroxy steroidal glycoside from Sinularia gravis Tixier-Durivault of the Andaman and Nicobar Islands

Synthesis and novel reactions of 2,3-dimethyl-1H-pyrrolo[1,2-a]benzimidazol- 1-one with secondary amines and N -bromosuccinimide

Heterogeneous catalytic asymmetric aminohydroxylation of olefins using polymer-supported cinchona alkaloids

Alcyonacean metabolites: Part 6† - Steroid glycosides from a new species of Sinularia genus of the Andaman and Nicobar coasts

Alcyonacean metabolites: Part 6^† - Steroid glycosides from a new species of Sinularia genus of the Andaman and Nicobar coasts