10 documents found, page 1 of 1

Galenia africana plant extract exhibits cytotoxicity in breast cancer cells by ...

Oxidative functionalization of a halimane diterpenoid achieved by fungal transf...

Made available in DSpace on 2019-10-06T15:33:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-05-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Regio and stereoselective activation of sp 3 C–H bonds remain one of the major advantages of biocataly...

Effects of harbor activities on sediment quality in a semi-arid region in Brazil

Spirostanol glucosides from the leaves of Cestrum laevigatum L.

Two new steroidal saponins, (25R)-spirost-5-ene-3β,26β-diol 3-O-α-l-rhamnopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 4)-[(1 → 2)-α-l-rhamnopyranosyl]-β-d-glucopyranoside (1) and (25R)-spirost-6-ene-3β,5β-diol 3-O-α-l-rhamnopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 4)-[(1 → 2)-α-l-rhamnopyranosyl]-β-d-glucopyranoside (2), along with the known diosgenin 3-O-α-l-rhamnopyranosyl-(1 → 4)-α-l-rhamnopyranosyl-(1 → 4)...

Chromomycin A2 induces autophagy in melanoma cells

The present study highlights the biological effects of chromomycin A2 toward metastatic melanoma cells in culture. Besides chromomycin A2, chromomycin A3 and demethylchromomycin A2 were also identified from the extract derived from Streptomyces sp., recovered from Paracuru Beach, located in the northeast region of Brazil. The cytotoxic activity of chromomycin A2 was evaluated across a panel of human tumor cell ...

Trachylobane and kaurane diterpenes from Croton floribundus Spreng

A new trachylobane diterpene ent-trachyloban-18,19-diol (1) was isolated from root bark of Croton floribundus, along with known diterpenes ent-trachyloban-19-oic acid (2), 15b-hydroxy-ent-trachyloban-19-oic acid (3), ent-trachyloban-19-ol (4), ent-kaur-16-en- 19-oic acid (5), ent-kaur-16-ene-6a,19-diol (6) and ent-16a-hydroxykaur-11-en-19-oic acid (7). ent-trachyloban-18,19-diol (1) was submitted to derivatizat...

In vivo antitumoural activity and composition of an oil extract of Brazilian pr...

The present study aimed to evaluate in vivo and in vitro the antitumoural activity of a propolis extract obtained with edible vegetable oil and its fractions and also to investigate its chemical composition by LC–MS and LC–MS/MS. To evaluate the toxicological aspects related to the propolis extract treatment, hematological, biochemical, histopathological and morphological analyses of treated animals were per- f...

The renal effects of alginates isolated from brown seaweed Sargassum vulgare

Alginates isolated from Sargassum vulgare , present a strong antitumor activity, associated with kidney reversible damage, as analysed by histopathology of treated animals. In the present study, the renal alteration mechanisms of S. vulgare alginates were investigated using the isolated perfused rat kidney and the isolated perfused rat mesenteric blood vessel methods. The results showed that the effects of Sarg...

In vivo growth-inhibition of Sarc oma 180 tumor by alginates from brown seaweed...

Previous studies had demonstrated that alginates from Sargassum sp. (Phaeophyta) showed a considerable activity against various murine tumors. The aim present study is to investigate the in vivo antitumor activity of two alginates (SVHV and SVLV) with di V erent viscosity extracted from brown seaweed Sargassum vulgare C. Agardh against Sarcoma 180 cells transplanted in mice. Both alginates inhibited growth of s...

Structure elucidation and anticancer activity of 7-oxostaurosporine derivatives...