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Recent Developments of 19‐Nor‐1,25‐dihydroxyvitamin D 3 Analogues
Author(s) -
Zhang CanFei,
Wan RenZhong,
Liu ZhaoPeng
Publication year - 2013
Publication title -
chemmedchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.817
H-Index - 100
eISSN - 1860-7187
pISSN - 1860-7179
DOI - 10.1002/cmdc.201300160
Subject(s) - vitamin d and neurology , calcitriol , chemistry , secondary hyperparathyroidism , autocrine signalling , calcitriol receptor , alfacalcidol , hormone , medicine , endocrinology , bone resorption , parathyroid hormone , pharmacology , calcium , osteoporosis , biochemistry , receptor , bone mineral
Abstract The vitamin D hormone, 1α,25‐dihydroxyvitamin D 3 [1,25‐(OH) 2 D 3 ], exerts its hormonal effects predominantly on intestine, bone, and kidney, where it plays a crucial role in calcium and phosphorus homeostasis and bone mineralization. In addition to its classical actions, 1,25(OH) 2 D 3 exerts pleiotropic effects in a wide variety of target tissues and cell types, often in an autocrine/paracrine fashion. These biological activities of 1,25(OH) 2 D 3 have suggested a multitude of potential therapeutic applications for the vitamin D hormone in the treatment of hyperproliferative disorders (e.g. cancer and psoriasis), immune dysfunction (autoimmune diseases), and endocrine disorders (e.g. hyperparathyroidism). However, the calcemic effects induced by 1,25(OH) 2 D 3 —hypercalcemia, increased bone resorption, and soft tissue calcification—limit the use of the natural ligand in these clinical applications. Therefore, numerous 1,25(OH) 2 D 3 analogues have been synthesized with the intent of producing therapeutic agents devoid of hypercalcemic and hyperphosphatemic side effects. To this aim, much attention has been focused on the development of 19‐nor‐vitamin D 3 derivatives that lack the ring‐A exocyclic methylene group (C19). In this review, the 19‐nor‐1,25(OH) 2 D 3 analogues are classified according to modifications made at the A‐ring, the side chain, or both the A‐ring and side chain, as well as other positions. The biological activities of these 19‐nor‐1,25(OH) 2 D 3 analogues are summarized and their structure–activity relationships and binding features with the vitamin D receptor (VDR) are discussed.