Suzanne Hetzel : 7 Saisons en Camargue

Cholest-5-en-7-one

In the deca-hydro-phenanthrenone ring system of the title compound, C(27)H(44)O, the two cyclo-hexane rings adopt chair conformations, whereas the cyclo-hexene ring adopts an envelope conformation. The cyclo-pentane ring is twisted. In the crystal structure, mol-ecules are stacked along the a axis, but no significant inter-molecular inter-actions are observed.

Basil Hetzel: vanquishing iodine deficiency disorders.

www.thelancet.com Vol 381 March 2, 2013 717 The story of Basil Hetzel’s fi ght against iodine defi ciency begins in 1964, in the highland villages of Papua New Guinea. A medical scientist with an interest in thyroid disorders, Hetzel had been invited by the country’s Public Health Department to investigate the goitre and cretinism that was prevalent in the mountain communities. Witnessing the s...

F . Pfeiffer , Ulm W . D . Hetzel , Ulm

3β-Chloro­cholest-5-en-7-one

The title compound, C(27)H(43)ClO, is a steroid derivative composed of a saturated carbon fused-ring framework with an alkyl side chain. The A and C rings have chair conformations and the B and D rings assume half-chair conformations. The cholesterol side chain is fully extended with a gauche, trans conformation of the terminal methyl groups. In the crystal structure, the molecules are aligned ...

Viruses Associated with Acute Respiratory Infections SUZANNE

Since the discovery of the rhinoviruses and respiratory syncytial virus only a few surveys have been made on the incidence of infections by the different respiratory viruses in the general population and the frequency with which they cause respiratory disease (Hilleman et al., 1962 ; Conference on Newer Respiratory Disease Viruses, 1963 ; Higgins et al., 1963). The present report describes the ...