A single stage straight forward process for extraction and isolation of lutein ester from the dried petals of marigold flowers Tagetes species using the carbondioxide as the supercritical fluid was developed. The pressure maintained for the extraction was up to 625 bar and at temperature up to 750 C. Lutein ester of...

A novel process is invented to prepare 3-0-(ß-D-glucopyranosyl)-3-0-demethyl thiocolchicine (thiocolchicoside) of higher purity Pharmacopoeial grade from a naturally isolated colchicoside, obtained from Gloriosa superba seed. The key phases of present invention for preparing thiocolchicoside involves: (1) Semi-synth...