STRUCTURE OF METHYLPHEOPHORBIDE-RCI

he methanolic extract of the cyanobacterium (blue-green alga) Spirulina geitleri has been treated with methanolic acid to convert all chlorophyllous pigments to their methylpheophorbides. Fractionation of the latter from methylpheophorbide a by thin layer chromatography and high pressure liquid chromatography yielded methylpheophorbide-RCI. Its structure has been determined as 132S-hydroxy-20-chloro-methylpheophorbide a by 1H-nuclear magnetic resonance, absorption and circular dichroism spectroscopy, mass spectrometry and by partial synthesis from chlorophyll a. The pigment is isolated from Spirulina geitleri irrespective of the use or omission of chlorinated substances during the isolation procedure

PHOTOCHEMICAL RING-OPENING IN meso-CHLORINATED CHLOROPHYLLS

Irradiation of 20-chloro-chlorophylls of the a-type with visible light produces long-wavelength shifted photoproducts, which transform in the dark to linear tetrapyrroles (bile pigments). The possible significance for chlorophyll degradation is discussed

Nowhere land : a summer in America's biggest commune

M.A. University of Hawaii at Manoa 2012.Includes bibliographical references.Twin Oaks is an Intentional Community (IC) in Louisa, Virginia that has been in full operation since 1967. Hidden away on 450 acres of woodland property, the 100-member population chooses to work and live outside of mainstream culture. Founded on B.F. Skinner's behaviorist theories, Twin Oaks is a communist establishment structured around a labor credit system that eradicates the need for money. In this creative non-fiction novel, the author gives a first-hand account of life at Twin Oaks by immersing herself in the commune's culture. During the visitor period, the author dissects her own psychological, political and sociological approaches by comparing life in the "outside world" to life at Twin Oaks. The author's re-evaluation of American culture, when removed from it, exposes deep flaws and striking similarities between the two worlds