摘要:
7-Oxa steroids which may be substituted in the 3-position with a hydroxy or oxo group or in the 2-position with a hydroxymethylene group or in the 2- and 3-positions with a substituent that forms a 5-membered heterocyclic ring, useful as antigonadotropic agents and a method of preparing these 7-oxa steroids from 3-hydroxy Delta 5-steroids including intermediates in this process.
摘要:
A new antibiotic, designated as antibiotic 1745A/X, is produced by the fermentation of the known microorganism Streptomyces antibioticus, ATCC 11891, using the novel compound erythronolide A oxime as the substrate. This new antibiotic is useful as an antibacterial agent.
摘要:
This invention relates to a process for the preparation of 2alkenyl-4-hydroxy-3-methyl-2-cyclopenten-1-ones from a 2-alkenyl or 2-alkynyl-3-methyl-2-cyclopenten-1-one and intermediates therein.
摘要:
3-HYDROXY-$5 PREGNANE DERIVATIES SUBSTITUTED AT C-6 WITH CHLORO OR LOWER ALKYL AND SUBSITUTED AT C-M WITH KETO, LOWER ALKANOLOXY OR HYDROXY AND 3,5-DIHROXY$6 PREGNANE DERIVATIVES SUBSTITUTED AT C-6 WITH LOWER ALKYL WHICH ARE USEFUL AS PROGESTATIONAL AGENTS.