INTERCONVERSIONS OF 16-OXYGENATED ESTROGENS

The Depression of Estrone-induced Uterine Growth by Phenolic Estrogens with Oxygenated Functions at Positions 6 or 16: the Impeded Estrogens

Two small groups of steroids in the estrane series-here designated as impeded estrogens,-represent a class of compounds which differ from the majority of estrogenic substances in exerting certain unusual influences on growth of the uterus. The induction of these effects previously was considered to be peculiar to estriol. The unusual growth properties common to impeded estrogens are twofold: (a...

Spectral characteristics and interconversions of the reduced oxidized, and oxygenated forms of purified cytochrome o.

Cytochrome o can be chemically reduced by excess dithionite and oxidized by ferricyanide and ammonium persulfate. The latter reagent is colorless and allows spectral observations in the Soret region. The spectrum of the “oxygenated” form of the reduced cytochrome, which has absorption maxima at 576, 543, and 414 nm, is elicited in aerobic solution by enzymatic reduction with NADH, and when form...

Fatty acid interconversions in lactobacilli.

Metabolism of C-16-oxygenated steroids by human placenta: the formation of estriol.

Two distinct pathways for the formation of estriol in vitro have recently been described: C-16 hydroxylation of estradiol-17-P by human fetal liver and rat liver (1, 2), and aromatization of A5-androstene-3/?, 16a, 17&triol by human placenta (3). Although the formation in viva of estriol from estradioll and estrone is well known (4), the studies mentioned above present the first convincing data...

Dual-controllable stepwise supramolecular interconversions.

A new unsymmetric guest compound comprising ferrocene and azobenzene moieties was synthesized and can form a host-guest system with beta-cyclodextrin (beta-CD) complexed. The complexation stoichiometries and sites of the ensembles can be selectively controlled by reversible redox and photoirradiation.