Picroroccellin

Roccella fuciformis. Picroroccelline, C2jH2aOsN2, m.p. 192-4°, gives benzaldehyde and benzoic acid on oxidation (Stenhouse and Groves, Annalen, 1877, 185, 14). [Pg.777]

Picroroccellin, 3, 6-dibenzyl-3-hydroxy-6-methoxy-l(or4)-methyl-3, 6-dihydro-2, 5(1/7, 4//)-pyrazinedione (revised structure), a Roccella sp lichen metabolite [87291-18-7].1036,1702... [Pg.243]

Methylpseudocyphellarin A Diacetyl-12-deoxypyxinol 0-a-D-Galactopyranosyl-( 1 6)-0-P-D-galacto-pyranosyl-(l 1)-D-glyceritol Moretenone Picroroccellin Hiascic acid... [Pg.117]

Transparent rectangular prisms (EtOH), mp 190-220, 192-194 °C, according to the rate of heating, [ajp + 12.5. (CHCI3) Deriv N,0-Dimethylpicroroccellin, lustrous, transparent, elongated prisms (EtOH), mp 229 °C, by methy-lation of picroroccellin with NaOH-dimethyl sulphate in EtOH StL Roccella fuciformis (L.) DC Lit Marcuccio and Elbe 1983, 1985... [Pg.129]

The lichens contain important amino acids similar to those in higher plants. Picroroccellin (1) and the cyclic tetrapeptide (2a or 2b), which yields L-prolin (3) and D-/5-amino-/5-phenylpropionic acid (4) on hydrolysis, have been isolated from Roccella fuciformis (L) Dc., R, canariensis Darb., and/ . vicentina Vain. [Pg.496]

Shin et al. (649) synthesized picroroccellin diastereomers and their regiomers (see Scheme 21). [Pg.21]

Forster MO, Saville WB (1922) Constitution of Picroroccellin, a Diketopiperazine Derivative from Roccella fuciformis. J Chem Soc 121 816... [Pg.252]

Marcuccio SM, Elix JA (1983) A Structural Revision of Picroroccellin. Tetrahedron Letters 24 1445... [Pg.264]

Shin C-G, Nakano T, Sato Y, Kato H (1986) Syntheses of Picroroccellin Diastereomers and their Regiomers. Chem Letters 1453... [Pg.270]

Stenhouse J, Groves C (1877) Uber Picroroccellin. Liebigs Ann Chem 185 14... [Pg.271]

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