The occurrence of long chain polyprenols in leaves of plants of Rosaceae family and their isolation by time-extended liquid chromatography

1992 ◽  
Vol 70 (6) ◽  
pp. 448-454 ◽  
Author(s):  
Ewa Świeżewska ◽  
T. Chojnacki ◽  
W. J. Jankowski ◽  
K. Singh ◽  
J. Olsson
Keyword(s):  
Liquid Chromatography ◽  
Fatty Acid ◽  
Large Scale ◽  
Fatty Acid Esters ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
Wet Weight ◽  
Rosaceae Family ◽  
Acid Esters ◽  
Long Chain

The long chain polyprenols composed of 30 and more isoprene units from leaves of plants belonging to the genera Potentilla and Rosa have been described. They occur in the form of fatty acid esters. The composition of polyprenol mixture was species dependent and its content reached ca. 0.5% wet weight. Large scale preparation of individual polyprenols from a natural polyprenol mixture was performed using time-extended liquid chromatography on the hydrophobic gel Lipidex-5000.Key words: long chain polyprenols, Rosaceae.

scholarly journals Eco-Friendly Synthesis of Lipophilic EGCG Derivatives and Antitumor and Antioxidant Evaluation

2018 ◽  
Vol 13 (9) ◽  
pp. 1934578X1801300 ◽  
Author(s):  
Rosina Paonessa ◽  
Monica Nardi ◽  
Maria Luisa Di Gioia ◽  
Fabrizio Olivito ◽  
Manuela Oliverio ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Large Scale ◽  
Epigallocatechin Gallate ◽  
Fatty Acid Esters ◽  
Functionalized Silica ◽  
Dpph Assay ◽  
Antioxidant Evaluation ◽  
Ros Formation ◽  
Short Times ◽  
Acid Esters

Epigallocatechin gallate (EGCG) was structurally modified to obtain EGCG fatty acid esters using an eco-friendly method employing Er(OTf)3 in 2-MeTHF as the catalyst. The products were purified in short times on a large scale using VERSAFLASH HTFP station on octadecyl-functionalized silica gel. The same Lewis acid showed to be a good catalyst for the synthesis of EGCG peracetated. The EGCG derivatives were assayed for their antioxidant capacity by DPPH assay and by ROS formation using the SH-SY5Y cell line.

Androsterone Long Chain Fatty Acid Esters in Human Breast Cyst Fluid*

1985 ◽  
Vol 60 (5) ◽  
pp. 940-946 ◽  
Author(s):  
UMA RAJU ◽  
MORTIMER LEVITZ ◽  
SILA BANERJEE ◽  
ALADAR BENCSATH ◽  
FRANK H. FIELD
Keyword(s):  
Fatty Acid ◽  
Chain Fatty Acid ◽  
Cyst Fluid ◽  
Fatty Acid Esters ◽  
Human Breast ◽  
Breast Cyst Fluid ◽  
Long Chain Fatty Acid ◽  
Breast Cyst ◽  
Acid Esters ◽  
Long Chain
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