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KMID : 1023620040280010045
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Reproductive and Developmental Biology
2004 Volume.28 No. 1 p.45 ~ p.52
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The Search of fig Pheromonal Odorants for Biostimulation Control System Technologies: I. Ligand Based Molecular Shape Similarity of 5-androst-16-en-3-one Analogous and Their Physicochemical Parameters
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Seong Nak-Do
Jin Dong-Il
Park Chang-Sik
Kim C. H.
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Abstract
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To search a new porcine pheromonal odorants, this research for biostimulation and role of pheromone was augmented by means of "control system technologies" to offer a potentially useful and practical way to improve reproductive efficiency in livestock species. Therefore the 13 physicochemical parameters such as similarity indice (S), hydrophobicity (logP) and van der Waals molecule volume (MV) etc. of 54 steroid analogues, which are analogous of substrate molecules, 5-androst-16-en-3-one (P1) and 5-androst-16-en-3-ol (P2) of lipocalin as receptor of pig pheromones were calculated and discussed. The physicochemical properties of these steroid analogues were mainly followed by steric dissimilar of A and D ring in steroid nucleus. And we found that from correlation with S values and MV constants of molecules, the more MV constants are small, the more S values tend to approach 1. Based on this results, the S-values of 4-androsten-3,17-dione (P1-1) and 5 -androstan-3-one (P2-1) were 1.0, respectively. The two compounds of them were chosen because they showed the same value each other at a side of hydrophobicity, molar refractivity and molecular volume. It is expected that the new two compounds will be able to substitute for P1 and P2, porcine pheromonal odorants.
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KEYWORD
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Porcine pheromonal steroid, 5-androst-16-en-3-one, Similarity indice, Physicochemical parameters
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