Source:http://linkedlifedata.com/resource/umls/id/C0282563
MSH: A group of often glycosylated macrocyclic compounds formed by chain extension of multiple PROPIONATES cyclized into a large (typically 12, 14, or 16)-membered lactone. Macrolides belong to the POLYKETIDES class of natural products, and many members exhibit ANTIBIOTIC properties.,NCI: A term used to describe a chemical structure of a compound containing a large lactone ring, usually with a 14 or 16-membered ring structure. The prototypical compounds within the macrolide class are the erythromycin-based antibiotics; however, many compounds with this chemical structure are being developed for other diseases.