Bonellin, a most unusual chlorin

Hemes, Chlorophylls, and Related Compounds: Biosynthesis and Metabolic Regulation

“…15), that appears to be involved in the sexual development of the marine Echiuroid worm, Boncllia viridis (5,6). Immature larvae of the worm normally develop into free-living females.…”

“…(b) The disease becomes clinically manifest as acute neurologic symptoms only after puberty, suggesting that some aspect of steroid metabolism is involved. ( 6 ) The neurologic symptoms may be precipitated by low concentrations of various inducing drugs and/or by fasting. The inducing drugs are those that in relatively high concentrations can cause an increase in hepatic mitochondrial ALA synthetase of normal adult laboratory animals, and in low concentrations can cause an increase in this enzyme in chick embryo liver cells in culture.…”

Partial activation of sea‐urchin eggs by bonellin

“…Among these, ammonia [Epel et al, 19741 and the Ca2+ ionophore A 23187 [Steinhardt and Epel, 19741 should be mentioned. changes occurring in the egg of the sea urchin Sphaerechinus granularis treated with bonellin, the green pigment of the worm Bonellia viridis [Pelter et al, 1976;Cariello et al, 19781, which is responsible for the masculinization of the larva. The two major targets of bonellin appear to be the cortical structures and the nuclear envelope.…”

Pseudozoanthoxanthins from gold coral

“…Comparison of the uv spectra of our compounds (Table 1) with those reported for zoanthoxanthin (1) and pseudozoanthoxanthin (2) derivatives (8) convinced us that we were dealing with a new skeletal type. 4 The complexity of the spectra suggested that our compounds belonged to the angular (pseudo) series. The composition of the major constituent (4), C,,H,,N,, indicated the presence of three additional carbons, shown by 'H nmr data (Table 2) to be present as a 4The trivial nomenclature of these pigments has become unnecessarily complex.…”